This is the BEST way to cook frozen chicken breasts in the Instant Pot! It is so easy and they turn out so well, I almost never take the time to thaw chicken before cooking it. Add seasonings, sauces, broth, or just water, salt and pepper and the result is always amazing.
– 4 frozen boneless skinless chicken breasts (mine were about 7-8 ounces or 200g each frozen) – 1 cup water or chicken broth – salt and pepper
Place chicken breasts in the bottom of the Instant Pot (no need to use the trivet!) — it’s okay if they’re stacked, just make sure none are stuck together. Pour in the water or chicken broth (or use another liquid like pineapple juice, apple juice, etc.) and season with salt and pepper.
Put the lid on and move the valve to sealing. Press Manual pressure and set the timer to 10-12 minutes high pressure (I've found 10 is just right, and at the 12 minute mark they are 180 degrees F or more). The Instant Pot will take about 10 minutes to come to pressure and start counting down from 10.
When the cook time is up, let pressure release naturally for 5-10 minutes before releasing the remaining pressure. Check that the internal temperature of the chicken is 165 degrees F — mine is always at least or higher.
Serve as is, chop, or add sauces as desired.