Put chicken breasts, boned and skinned, on greased 9x13 inch pan. Place slices of Swiss cheese on top of chicken. Dilute 1 can cream of chicken or mushroom soup with 1/2 can water and pour over chicken and cheese.

Melt butter in fry pan and add bread crumbs just enough to moisten thoroughly. Spread on top of casserole. Bake in 350 degree oven for 40 minutes covered with aluminum foil. Remove foil after 40 minutes and bake for another 20 minutes.