Crock Pot Swiss Chicken

6 chicken breasts, boneless and skinless
6 slices Swiss cheese
1 can cream of mushroom soup
1/4 cup milk
2 cups stuffing mix
1/2 cup butter or margarine, melted

Lightly spray crock-pot with cooking spray. Place chicken breasts in bottom of crock pot.  Top with cheese. Combine soup and milk, stirring well.  Spoon mixture over cheese; sprinkle with stuffing mix.  Drizzle melted butter over stuffing mix.  Cook on low 8 to 10 hours or on high for 4 to 6 hours.