Preheat oven to 350 degrees Fahrenheit. Spray a square 8x8 inch baking dish and set aside.
In a medium sized mixing bowl mix together milk and cream of chicken soup.
Place chicken breasts in prepared glass baking dish. Pour chicken soup mixture over chicken breasts. Layer cheese on top and then sprinkle stuffing over the cheese. Pour butter over the stuffing mix.
Bake for 1 hour or until chicken is cooked through and stuffing is golden brown.
