Copycat Costco Chicken Salad – Instant Pot or Not

Copycat Costco Chicken Salad - Instant Pot or Not


  • 1 1/2 pounds chicken breast, each cut in several chunks (about 4 cups cooked, shredded chicken) see note
  • 1 32- ounce carton chicken broth or stock, optional (enough to cover chicken as it cooks)
  • 3/4 teaspoon Rotisserie Chicken Seasoning, optional
  • 1 small stalk finely diced celery (about 3/4 cup)
  • 1/2 finely minced (preferably sweet) onion (about 1/2 cup)
  • 1 1/4 cup mayonnaise, to taste
  • 2 tablespoons lemon juice
  • 1 to 1 1/2 teaspoons salt or 1 teaspoon of salt and one teaspoon seasoning salt
  • 1/2 teaspoon freshly ground black pepper
  • 2 tablespoon parsley, chopped or 1 tablespoon dried


First, cook and cool the chicken:

On the stove, in a saucepan add chicken and cover by 1 inch with chicken stock or broth. Add Rotisserie Chicken Seasoning if using. Bring to a good simmer, then turn down the heat and continue to cook at a bare simmer until chicken has cooked through about 12 minutes. If time allows, cool in the stock, then drain. Stock may be reserved for another use.

To use the Instant Pot, add chicken, Rotisserie Chicken Seasoning if using, and stock to cover by 1 inch. Seal and set to High Pressure, 10 minutes. Allow a 20-minute natural release then vent any remaining pressure. If time allows, remove liner from pot and continue to let chicken cool. Stock may be reserved for another use. 

For both methods:

Shred chicken, preferably with a mixer, either a stand mixer or hand mixer. A food processor with a dough or cutting blade works well, too, in batches. Place mayonnaise in a large bowl, add the lemon juice, salt and/or seasoning salt, pepper and parsley. Mix together. Add chicken in two or three batches, mixing after each. Taste and adjust seasonings and add more mayonnaise if desired .

Serve immediately if you wish; it’s better if placed in the fridge for an hour before serving. There are no stabilizers in this recipe; stir back together if at any point the dressing becomes watery during storage.


  • It’s not easy to get an exact amount of chicken unless it is weighed..this should be around two good sized breasts. As stated the ingredients listed should get you close, but if you use more or less chicken, you’ll want to adjust the other ingredients by taste.
  • If chicken salad is too thick, wait for the hour fridge time and if it’s still too thick, thin with a little milk.
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