1 lb. hamburger
1 c. chopped onion
1 (15 oz.) can tomato sauce
1 1/2 c. water
1 1/2 tsp. salt
1/4 tsp. pepper
1 tsp. chili powder
8 oz. spaghetti, cooked and drained
1 c. shredded cheese

Lightly brown hamburger in skillet. Add onions and cook until tender. Stir in sauce, water and seasonings. Simmer 25 minutes. Place half of spaghetti in a 2-quart casserole. Cover with half of sauce. Sprinkle half of cheese on sauce; repeat layers.

Bake at 350°F for 30 minutes.