Poor Man's Mock Prime Rib

Poor Man’s Mock Prime Rib

It’s been a long time since I’ve made a roast. I mean a real roast, in the oven. I did do a 30 Minute Instant Pot Roast, which was fun, but that was way back in January. So when I saw roast on sale this last week I decided it was about time to try another. Now Prime Rib isn’t in my budget, and truthfully, neither is a Standing Rib Roast but here’s my go-to method to take a cheap, grocery store roast and make it taste better, kind of a Poor Man’s Mock Prime Rib. This is a super easy recipe, but it’s a bit different and I’ve taken you through each step; don’t be worried about the length of the post!

Poor Man's Mock Prime Rib, Ruth's Chris Potatoes au Gratin, Restaurant Style Brussels Sprouts with Lemon and Caper Sauce

Poor Man’s Mock Prime Rib, Ruth’s Chris Potatoes au Gratin, Restaurant Style Brussels Sprouts with Lemon and Caper Sauce


I know one thing that can’t be duplicated is the absolute succulent fork-tender texture of a prime rib or standing rib roast, or that very beefy flavor and sometimes, yes, you do get what you pay for. Still, though, that you can get a delicious, flavorful dinner from a simple, sales priced grocery store roast, a Poor Man’s Mock Prime Rib…if you’re careful and follow some rules and give it some help!

About Poor Man’s Mock Prime Rib:

I grew up back in the 60s with the occasional Sunday roast, a Rump roast that my Mom cooked as carefully as she was able given what she had. They were tough, for sure and maybe a little pink in the middle. Mom saved (notice I said “saved” not served) her roast with lots of gravy and mashed potatoes, and really that’s all I cared about, although I had to have the obligatory slice of roast.

Speaking of potatoes, to go with my roast, I made Ruth’s Chris Potatoes au Gratin Copycat potatoes. And I made a wine sauce, based on a sauce that Ron of Lost in a Pot used for his Roast Lamb. Can you hear those angels singing? You will once you try it! That wonderful winey sauce helped elevate my cheaper cut of beef. Do visit Ron’s site for more detail on the Wine sauce and the original recipe.  Then there’s the Creamy Horseradish Sauce, too, coz you gotta have horseradish! The other item on the plate is my Restaurant Style Brussels with Lemon Caper Butter Sauce.

When the beef is the star of the show, having a lot of beautiful sides is the way to go. It helps to stretch that pricier beef (and even a cheap roast is not inexpensive) and helps fill everyone up. Unless you’re serving my son. In that case everyone gets a slice or two of beef and he just eats the rest, lol! Seriously though, plan on serving two or three thin slices of beef per person, maybe more if they’re big eaters, so about 4 to 8 ounces per person. You can factor age in, too, and if your children are more normal than mine, they’ll probably eat less than adults. There’s a chart, below, to help you out.


Poor Man's Mock Prime Rib, Ruth's Chris Potatoes au Gratin, Restaurant Style Brussels Sprouts with Lemon and Caper Sauce

Poor Man’s Mock Prime Rib with Ron’s Wine Sauce

Making Poor Man’s Mock Prime Rib, General:

This might originally be a Cook’s Illustrated Method. I really can’t remember. Over the years, I’ve tried different methods, searing, not searing, reverse searing, cooking high, and then turning the oven off or down, or just cooking low, and this particular method is a game-changer. Every time I’ve used it, I get a roast consistently and beautifully cooked all the way through.

This is pretty foolproof, but give it a try first on family or when timing isn’t an issue rather than on company because there are some variables that are going to affect how long this roast takes. How well your oven heats, how accurate your oven’s thermostat is and of course, the size of the roast are all going to affect your timing. This isn’t a recipe where you figure out how many pounds your roast is and multiply it out by a number of minutes.

The Beef for Poor Man’s Mock Prime Rib:

But now that the roster for the meal is set, and you’ve been duly warned, lol, let’s talk about the beef in this recipe for Poor Man’s Mock Prime Rib. I used a cheaper cut and Cook’s Illustrated recommends top sirloin, also called top butt, top sirloin butt, center-cut roast, or spoon roast. Sirloin tip or eye of round, or top round will work, too. I’ve heard it said to avoid the “rump” or any bottom round roast, which is best for braising, although I used the Rump, here.

It goes without saying that this method works beautifully for any expensive roast you might have, too. Just make sure your roast is tied, have the butcher do it for you if it isn’t already, so the roast cooks evenly. If you have to do it yourself, here’s a little lesson.

Especially, though, when using a cheaper roast, don’t overcook it. The more well done the roast is, the tougher it will be. I wouldn’t even go to medium, personally, and for sure medium rare to rare is going to be better. Cut it as thinly as possible, across the grain. Even though I’m calling this Poor Man’s Mock Prime Rib, you’ll have a hard time getting through this if you cut a slab of it like you see Prime Rib served at a restaurant. This is going to be more like the beef you get at a buffet, thinly sliced to order by the white-hatted servers.


Poor Man's Mock Prime Rib

Poor Man’s Mock Prime Rib

Preparing Poor Man’s Mock Prime Rib:

Anywhere from 18 to 24 hours before you’re ready to cook your Poor Man’s Mock Prime Rib, you’re going to rub it with a crazy amount of salt! Table salt is ok, but kosher salt is better for long jobs like this. Table salt has iodine which it’s said can cause some discoloring. Then wrap it up tight and let it sit in the fridge.

When you’re ready to roast pull it out of the fridge, remove the wrapping, pat your roast dry and let it rest for 30 to 45 minutes at room temperature before you brown your roast. That’s the perfect time to make your rub. There are three options, below.

Black Pepper Rub:

If you wish, all you really have to do is add pepper. Rub the roast with a teaspoon oil, then use about a 2 teaspoons to a tablespoon or two of cracked black pepper, the lesser amount for a smaller roast and larger amount for a larger roast, just pressed into the roast before you brown it. I prefer to saute the roast as is and then pack on a flavorful mix of spices after I brown it and before I roast it.

Simple Rub:

You can go really old school simple and sprinkle on a blend of spices after the roast is browned, using the smaller amount for a 3 to 4-pound roast and the larger amount for a 4 to 5-pound roast:

  • 1 to 1 1/2 teaspoons garlic powder
  • 1 to 1 1/2 teaspoons onion powder
  • 1 teaspoon ground black pepper

Prime Rib Rub:

I like a bold, robust spice and herb blend, just like what’s used on a prime rib, again adjusting for the size of the roast. I really pack this on after the roast is browned. Just mix together ingredients. This already has a little oil in it, so it sticks better, but some might fall off; just stick it back on top. Do the best you can:

  • 1 to 2 tablespoons coarsely cracked black or mixed pepper
  • 3-5 large garlic cloves, minced
  • 1 to 2 tablespoons dried thyme
  • 1 to 2 tablespoons dried rosemary, minced
  • 2 to 3 tablespoons oil


Poor Man's Mock Prime Rib

Poor Man’s Mock Prime Rib

Browning the Roast:

To brown the roast, you’ll heat up oil in a skillet and slowly brown the roast, getting a good color on all sides, about three or four minutes per side, or about 15 to 20 minutes, total. Be patient!

Make sure to save the drippings if you plan on making any type of sauce or gravy because you really don’t have any drippings when the roast cooks in the oven. The oven method is so gentle that every bit of juice stays in the roast.

The Two Temperature Electronic Thermometer:

If you don’t have one, get yourself an electronic thermometer with a cord. The probe tip goes dead center in the roast, and cord leads right up to the monitor you’ll set on the counter next to the oven. The oven door just closes right over the cord.

Thermometers are reasonable; you can get a good one for under 20 bucks. If you have/get one with a remote, that’s ideal; you won’t have to be tied to the kitchen. Best is a thermometer that shows two temperatures, the first, the temperature of the probe, and the second, the temperature of the oven.

If you don’t have an electronic probe thermometer with a cord and preferably a remote, this recipe could be potentially very tedious to make:

  • You will risk losing heat in the oven if you have to open the door to check the temperature. If that’s the case, take the roast out, close that oven door, check the temp, then return it to the oven, again, closing that oven door immediately. This can be very problematic, especially in the second stage of cooking.
  • You also might not realize that the oven has lost heat too fast and that the roast has “stalled out” during the second stage of cooking, which might mean when you think your roast is done, you’ll find it not cooked right. No problem, just put it back in and turn the oven back up, but it’s going to take more time than you thought it would.
  • You want to be cognizant about how long your roast is going to be in the “danger” zone of 40 to 140 degrees, and if you don’t realize that the roast has stalled, it could potentially happen. There’s little danger from a roast as most nasties live on the outside of beef and it’s been seared, but your safest bet is to have that corded, probe thermometer. (Food safety is part of the reason why smaller roasts are recommended for this recipe.)


Poor Man's Mock Prime Rib with Restaurant Style Brussels with Lemon Caper Butter Sauce

Poor Man’s Mock Prime Rib with Restaurant Style Brussels with Lemon Caper Butter Sauce

The Process:

In the initial cooking time, you’ll roast from anywhere to an hour and a quarter to two and a quarter hours, depending on the size of the roast and how well you want it done. During this stage, you’re shooting for five degrees less than the final temperature of the roast when it is done to your preference. The roast will cook slowly at first, but towards the end of this stage of the cooking time, the temperature will spike quickly. Be prepared once it gets to within 10 degrees of your desired temperature. Then turn the oven off without opening the door.

The second stage of cooking happens as the roast sits in the closed oven, slowly rising in temperature, cooking in the residual heat for about 30 to 50 minutes until your roast is at your final preferred temperature. It’s best not to open the door during this time, but you will need to check the temperature to know if it’s done. If your oven holds heat well, you are golden, if not, read the next section.

As a quick reference, here are the standard temperature/doneness levels for roasts, noting that you’ll want to shoot for the center of each range as there is some overlap:

120°F to 130°F, (49°C to 52°C) = Rare
130°F to 140°F (55°C to 60°C) = Medium Rare
140°F to 150°F (63°C to 66°C) = Medium

Trouble Shooting the Second Stage:

During that second stage of cooking, if your oven doesn’t hold heat well, the cooking can stall out. It seems gas and older ovens are more prone to this. Here is where a two temperature electronic thermometer with a remote is really helpful. You will know if the oven temperature is too low, and it will be easy to determine if the temperature of the roast has stopped climbing from wherever you are.

It would be very tedious to keep checking the temperature without the remote and you would be pretty much tied to the kitchen or at the very least, nearby, checking every few minutes if you have an electronic probe thermoter w/o a remote. If you are going old school with a non electronic thermometer, the same applies; make sure you can read the thermometer through the oven door because you won’t want to open it up during this stage.

If the temperature of the roast stops rising, heat the oven back up to 225°F for 5 minutes, then shut it off, and closely monitor the temperature of the roast. Some say to leave your oven on at 170 degrees just to be on the safe side. I haven’t tried that – I might need to make more roasts to check it out.

My Personal Experience Making Poor Man’s Mock Prime Rib:

I have a good solid brand of a gas oven, nothing fancy or restaurant quality, and the thermostat is accurate. During the second stage, my 3 pound 10-ounce roast stalled out at 35 minutes. A quick check of the thermometer remote (I was lounging in the living room with my laptop – that’s why the remote is fun) showed the oven temperature was 131 degrees F. and my roast was at 125 degrees F.

I got up, turned the oven back on to 225 degrees F., waited five minutes and turned the oven off. The roast immediately started rising in temperature and my roast was perfectly done for me at 138 degrees F., exactly 18 minutes after I turned the oven back on.

Resting Poor Man’s Mock Prime Rib:

When finished, don’t forget to let the roast rest for15 to 20 minutes, covered with foil. That’s a great time to finish up your other dishes, make a sauce if you want, etc.

For me, that was when I put my Ruth’s Chris Potatoes au Gratin in the oven to finish off. They are par-cooked on the stovetop in cream, then assembled and baked in the oven to finish and brown. They’re ideal for this roast. Then I reheated the Restaurant Style Brussels with Lemon Caper Butter Sauce I made earlier (they cook at a high temperature for a long time so I did them ahead) and reheated the Wine Sauce I’d tossed together from the drippings left from browning the roast.

When the roast was done, there were basically no drippings in the roasting pan at all. As the roast rested and after it was sliced, there was a minuscule amount of juices released, which is what you want. Then you’ll know all those juices are in the beef. The little I had, I tossed into the sauce.

Here are the four meals made with the roast. All the links, and more, are below under the section for Saving Money on Poor Man’s Mock Prime Rib and Leftovers from Poor Man’s Mock Prime Rib:

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Saving Money on Poor Man’s Mock Prime Rib:

There’s no sense, really, in ever paying full price for a roast. Watch the specials and pick them up at a low. You’ll generally find great sales on the lesser cuts of meat during the fall when meat production is at a high and around, and shortly after, the winter holidays. Big, gorgeous, pricy roasts rule for Christmas and New Years and something has to be done to move the cheaper cuts. And if you’re really interested in saving money on groceries, get yourself a freezer so you can be eating sales priced food anytime you want.

The sales priced roast I bought was a bit larger than I needed; I carefully trimmed it to size for my family (3 1/2 pounds). Then I made two smaller dinners with it, each of which only use a smaller amount of beef. That helped me stay in budget because I was able to “cost average” the price of the beef over three meals (one was Vietnamese Beef & Potatoes, and the other an old school Mongolian Beef. Then I had leftovers, see below for some suggestions.

Servings from Poor Man’s Mock Prime Rib:

You want at a minimum a 3 1/2 pound roast and at a maximum 4 1/2 pounds for this recipe and there is very little to no shrinkage. If each person eats 8 ounces (1/2 pound) which will probably be the size the average adult will eat you will be able to calculate about how many servings your roast will provide. I know you really didn’t want to math did you?

  • 3 1/2 pounds is 56 ounces, divide by 8 is 7 (8 ounce) servings
  • 4 pounds is 64 ounces, divide by 8 is 8 (8 ounce) servings
  • 4 1/2 pounds is 72 ounces, divide by 8 is 9 (8 ounce) servings

Leftovers from Poor Man’s Mock Prime Rib:

With my leftover beef, I ended up being these amazing Leftover Steak & Mushroom Pies. If you aren’t into the Steak & Mushroom Pies, a couple of other suggestions for using any leftover Mock Prime Rib is to very thinly against the grain (I love my kitchen slicer).

Then use it for Chicago Italian Beef Sandwiches, French Dip Sandwiches, Philly Cheesesteak Sliders or Paneras Steak Sandwiches Copycat. For more ideas, see my post Inspiration & Recipes for Leftover Beef and Leftover Steak. A roast is basically steak that hasn’t been cut to size, after all.

Trouble Shooting, Saving Overcooked or Dry Roast or Leftover Roast:

First of all, this method works beautifully, but if you find your leftovers are just too tough, or maybe you’ve overcooked your beef and/or aren’t happy with it, there are solutions and even the toughest beef can be saved. All it takes is moisture and time.

Chunk the beef and toss it in a pan, slow cooker or your instant pot with some beef broth and/or flavorings of your choice and cook it until it’s soft and succulent and easily shreddable, Then it can be used as you wish for sandwiches, tacos, burritos, etc.


Poor Man's Mock Prime Rib

Poor Man’s Mock Prime Rib


Poor Man’s Mock Prime Rib

  • Author: mollie
  • Total Time: See notes allow for 18 to 25 hour marinade
  • Yield: 7 to 9 servings 1x
  • Category: Beef Main Meal
  • Cuisine: American



Be sure to read through the information above in the post for the types of roast, three different rubs to choose from and more information.

  • 1 3 1/2 to 4 1/2 pound roast
  • 3 to 4 teaspoons kosher salt or 1 1/2 to 2 teaspoons table salt (smaller amount for smaller roast)
  • 2 tablespoons vegetable oil for browning
  • black pepper or rub of choice, see information under preparing Poor Man’s Mock Prime Rib
  • Red wine sauce and ingrediens are below in instructions


Sprinkle all sides of roast evenly with salt. Wrap with plastic wrap and refrigerate 18 to 24 hours.

When ready to cook, remove roast from fridge and let rest at room temperature for 30 to 45 minutes, depending on size, adjust oven rack to middle position, prepare a pan with a rack over it and heat oven to 225°F.

If using a rub, prepare it and have it ready for after the roast is browned. If just using cracked black pepper, rub roast with a teaspoon of oil and press the black pepper into roast before browning. Heat 2 tablespoons of oil in a skillet over medium-high heat. Sear roast until browned on all sides, about three to four minutes per side. Remove roast to a rack set over a pan or lined sheet tray. If making a gravy or sauce, reserve any drippings in the skillet. If using a rub, rub and pack it onto the roast now.

Roast until thermometer inserted into the center of roast registers five degrees below your preferred degree of doneness (see Degree of doneness, below), about 1 3/4 to 2 1/4 hours, depending on the size of the roast. Turn oven off; leave roast in the oven, without opening door, until a thermometer inserted into the center of roast registers the desired temperature, 30 to 50 minutes longer.

Transfer roast to carving board and let rest 15 to 20 minutes. Slice meat crosswise as thinly as possible and serve.


  • If roast stalls out during cooking or hasn’t reached the desired temperature in the 30 to 50 minutes, heat oven back up to 225 degrees F. for five minutes.
  • For a 4 1/2- to 6-pound roast, cut in half crosswise before cooking to create 2 smaller roasts.


  • Most of the time is hands off. Day of, plan on 2 3/4 hours at a minimum and up to 3 hours 30 minutes at a maximum
  • 18 to 24 hours marinating in salt
  • 30 to 40 minute rest at room temperature (ideal time to prepare your rub)
  • Rub & Searing: 20 to 25 minutes:
  • First stage cooking for medium 1 1/4 to 1 3/4 hours
  • Second stage cooking, 30 to 50 minutes
  • Rest 20 minutes

Degree of doneness:

120°F to 130°F, (49°C to 52°C) = Rare
130°F to 140°F (55°C to 60°C) = Medium Rare
140°F to 150°F (63°C to 66°C) = Medium

Red Wine Sauce:

  • 1 tablespoon sugar
  • 1 cup Red wine, preferably what you’ll drink with dinner.
  • 1 cup beef stock
  • 1/4 teaspoon dried thyme
  • 1 teaspoon Soy sauce, such as Kikkoman
  • reserved drippings from browning roast
  • 1 1/2 tablespoons cornstarch, mixed with a little red wine or water
  • 1 tablespoon cold butter
  • Salt and freshly ground black pepper to taste

In a cold pan or skillet, add sugar in a thin layer. Slowly heat over medium-high heat until sugar melts, watching carefully so that it doesn’t burn. Have the wine and stock at the ready and add it immediately once the sugar has melted or if the sugar is in danger of burning. Add in the thyme, Soy sauce, and reserved drippings. Stir up any hardened sugar from the bottom of the pan until it dissolves, bring to a simmer and reduce by half, about 12 minutes. Sauce may be held at this point until ready to serve.

When ready to serve, mix the cornstarch with a little water. Bring the sauce to a boil and whisk in the cornstarch mixture. Whisk until the sauce thickens to desired consistency. Remove from heat and allow to cool for several minutes, then add cold butter, gently stirring to mix in. Season to taste with salt and pepper. When your beef is sliced, add any drippings from the resting and/or slicing to the sauce.

Sauce adapted from Lost in a Pot. Visit Lost in a Pot for original, not adapted recipe and more hints and helps with the wine sauce. This method of cooking the beef, to the best of my knowledge was originally developed by Cook’s Illustrated.

Keywords: Beef, Beef Stock, Cook's Illustrated, roast beef, Sauce, Wine

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I’m sharing my Poor Man’s Mock Prime Rib at Fiesta Friday #249. The co-hosts this week are Diann @ Of Goats and Greens and Jenny @ Apply To Face Blog.

If you’re looking for Holiday dishes or just something fun to make all in one place, stop by and see what everyone has bought to the party!

Poor Man's Mock Prime Rib will take any old grocery store roast, flavor it and cook it beautifully, simply and all the way through to the perfect temperature. This method works on a pricy roast, too. #MockPrimeRib #PoorMansPrimeRib #HowToMakeACheapRoastBetter

43 thoughts on “Poor Man’s Mock Prime Rib

  1. Saundra Shaw

    Tried this tonight and it was delish! Hubby raved about the flavor, used a rub called High Octane, which has coffee and other spices! Roasted to 140 then took it out and rested. Reheated slices tonight and it was perfectly medium rare! Used a center cut chuck roast. Thanks for the excellent recipe and instruction details!

    • FrugalHausfrau

      Hi Saundra, thanks for taking the time to stop back and comment! I checked out the rub (saw it on Amazon) and I bet it was amazing on this. I use a coffee rub on a strip steak and love it, but didn’t think about it for this roast. Funny thing is that I don’t drink coffee but I love the flavor it brings to beef. It just ups the ante!!


    • FrugalHausfrau

      Hi Deb. That’s an interesting question. I know this works well for a smaller roast because the heat is able to reach through a roast of that size. I haven’t ever cooked a large roast using this method and don’t know if your larger roast would cook to the desired temperature. If you’re not worried about presentation, I’d be tempted to cut the roast into two portions.


      • FrugalHausfrau

        Another thought, whether it’s feasible to cook a larger roast might be dependent on the shape. I’d be more tempted to try it with a flatter, roast than one that’s more rounded if that makes sense?

    • FrugalHausfrau

      Hi Maria, look under the Instructions in the actual recipe; I’m betting you probably caught it by now since you commented about an hour ago!! Sorry I couldn’t answer immediately!


  2. NANCY H.

    First and foremost.. Thank you kindly for your recipe, tips and variations to the Poor Man’s Prime Rib. I am excited to try this recipe for a romantic Valentine dinner with my hubby. Please bare with me if the answer is ridiculously obvious to every other reader but myself. It has been a very long day and it is 2am. 😳😴🤯 LOL.. SO do I preheat the oven to 225 degrees for the initial, first stage of cooking? 🥴
    Again.. Thank you and Happy Valentines❣

    • FrugalHausfrau

      Hi Nancy!! I just happened to have woken up so I saw this! Yes, preheat the oven. I hope you and your hubby have a fabulous Valentines! And roast, lol!!! 🙂 🙂 🙂

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  4. Sherry

    Absolutely delicious. I’ve been cooking roast a long time. I make a good Prime Rib. But, for a Sunday dinner roast, the best I ever made. Thank you. I made a Rump roast. So tender.

    • FrugalHausfrau

      Hi Sherry, thanks for stopping back and commenting! I’m so glad it worked well for you! Of course, now you’ve mentioned prime rib and made me hungry for that!!

  5. Your photos have my mouth watering. I don’t make beef roasts often at all, but now I am thinking I need to put one on my grocery list and give your method a go!

  6. Ron

    Mollie, first thanks for the shout out about my red wine sauce. Your mom and mine you’d of got along well. My mom used to say chew you meat well it’s good for your teeth. I was an adult before I had a good Sunday roast. Your roast sounds great, we don’t get good beef here so I think your recipe will go good with our Swedish beef.

    • FrugalHausfrau

      Ron I’ve made this roast plenty of times with no sauce at all, maybe just plain old gravy and even sometimes with wine, but when I saw that sauce with the caramelized sugar I just *knew* I had to try it. So thank you for sharing that recipe. I think it just really made the whole meal. And I did’t even have mashed potatoes, lol!! Like I said, the beef ended up just a vehicle to get more sauce to my mouth, lol!!

  7. I LOVE reading your recipes. I always want to eat the food that you cook and this beauty is no exception! So much clever information here. I am off to track down a double probe!! Roast Beef is one of personal faves and this looks simply divine! Thank you so much for bringing this bobby dazzler to #FiestaFriday

  8. Pingback: Poor Man’s Mock Prime Rib — Frugal Hausfrau | My Meals are on Wheels

  9. I made roast beef a couple of days ago. I followed a recipe online except I wanted to be smart and sort of reversed the steps, because of pure vanity. Long story! Now I have a roast in my fridge nobody wants to eat! Maybe I’ll just nuke it in the Instant Pot and turn it into room vieja or something. Next time I’ll follow your recipe instead, to a T!

  10. Diane

    Wow, I really appreciated your in-depth explanations and tips. So timely with the holidays coming up. I’ll be using your recipe for sure. Thanks!

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