1 1/2-2 lb. hamburger
Med. onion
2 tbsp. oil
Sm. bottle ketchup
Salt & pepper to taste
1 tsp. chili powder
4 slices cheese
2 c. macaroni

Brown onion in oil; add meat. Cook until brown. Add ketchup and chili powder. Simmer 10-15 minutes. Cook macaroni as directed on package; mix with hamburger. Put cheese slices on top of casserole and bake in 350 degree oven until cheese is melted.