I apologize that I call this a 30 minute roast, because I realized after the post was all done and set that you need a few additional minutes to saute & bring up to pressure. So it’s more like a 38 minute roast!
Rub roast with Montreal Steak seasoning, as little or as much as you’d like.
Add oil to Instant Pot and turn to Saute, High. When hot, add roast and brown on all sides. Remove roast, add broth and scrape any bits off the bottom. Add onions in a pile, do not stir. Add the roast on top, centering it in the middle, right on top of the onions.
Cancel out the Saute function, add lid, seal and turn Instant Pot on to High Pressure, using the Manual function, for 4 minutes. Do not choose (or else cancel out) the Keep Warm function.
When the four minutes of pressure cooking time is up, leave the roast in the pot, and set a timer for 20 minutes. (Most IP’s will not “count up” as they usually do because the keep warm function is not selected, so you will need to manually time.) If there is any remaining pressure after the 20 minutes is up, do a quick release. (Remove the roast immediately when that 20 minute time is up; do not let it sit any longer in the IP.)
Rest for several minutes and carve. If the roast is rarer than you’d like, add the slices back into the hot au jus to gently cook to the desired doneness. Turn the instant pot back on to Saute and choose Low if the au jus needs to be heated.
Serve with au jus. If more au jus is desired, add the remainder of the broth from the can.
Note: I love scratch cooking but there’s no shame in adding what’s needed to get an intense flavor for the au jus. I like to add a little Johnny’s French Dip au Jus. Just a touch, by taste. Any remainder can be divided into ice-cube trays and frozen for the next roast.
French Dip Sandwiches:
If more au jus is desired, add extra broth to the onions and sauce in the instant pot.
Dip roast beef into warm au jus in Instant Pot. If you’d like your Roast Beef cooked a little more, leave in the au jus until the desired doneness. Lay on sliced French Baguette. Add cheese on top of hot beef if desired. Add onions from the au jus on top of the beef.
Divide au jus among 4 bowls and serve with sandwiches.