Swiss Chicken Casserole

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