1 (6 oz.) pkg. macaroni
1 (12 oz.) can corned beef, cubed
1/4 lb. American cheese, cubed
1 can mushroom soup
1 c. milk
1 sm. onion, chopped
3/4 c. buttered crumbs

Cook macaroni in boiling salted water, drain. Combine remaining ingredients except crumbs and alternate with layers of macaroni in greased dish (2 quart). Top with buttered crumbs or potato chips. Bake 1 hour at 350 degrees.