Sweet Onion Casserole

6 Sweet Onions, thinly sliced
1/2 pound mild Cheddar cheese
1 (3 & 3/4-ounce) package potato chips, crushed
Red pepper, taste
2 (10 & 3/4-ounce) cans cream of mushroom soup, undiluted
1/4 cup milk

Butter a 9x13-inch baking dish. Layer alternately in thin layers onions, cheese, potato chips and pepper. Combine soup and milk in bowl and blend well. Pour over ingredients in baking dish. Bake 1 hour in 350 degree oven. Serves 8