1 1/2 lbs. hamburger
1 sm. onion
1 lg. jar spaghetti sauce
Parmesan cheese
8 oz. macaroni twists
3 1/2 oz. pepperoni
2 c. Mozzarella cheese

Cook onion and hamburger; drain fat. Cook macaroni. Mix sauce, macaroni. Stir macaroni in meat mixture and mix well. Layer the meat mixture with pepperoni, cheese and noodles. Top with cheese. Bake at 350 degrees for 20-30 minutes.