6 med. onions, thinly sliced
1 - 3 3/4 oz. pkg. potato chips, crushed
1/2 lb. mild grated cheese
2 (10 1/2 oz.) cans cream of mushroom soup
1/2 c. milk
1/8 tsp. cayenne pepper

Alternate layers of onions, crushed potato chips and grated cheese in buttered 9 x 13 inch casserole. Pour soup and milk over top of onion mixture. It will cook through. Sprinkle cayenne pepper on top. Bake at 350 degrees for 1 hour.