Add milk and cream of chicken soup to the bottom of the Instant Pot.
Stir milk and cream of chicken soup together. I like to use the 98% fat free, but that is up to you! Layer 3 frozen chicken breasts onto the bottom of the pan, add the layer of ham on top of the chicken and then add the layer of cheese. Pour stuffing over the top. Top with small cubes of butter and a splash of milk. Cook 26 minutes on manual (high).
I like to serve this meal with a steamed veggie, side salad, and fruit.