12 oz. sour cream
4 oz. sliced mushrooms (in jar or can)
1 can cream of mushroom soup
1 pkg. dried beef
6 boneless chicken breasts, flattened

Combine sour cream, mushrooms and soup. Layer beef in baking dish and place chicken breasts over top. Pour soup mixture over all. Cover with foil; bake at 350 degrees for 1 hour (1 1/2 hours if chilled before baking).