1 (2 lb.) box spaghetti
2 lbs. hamburger
1/4 c. onion
Salt & pepper to taste
1 lg. jar spaghetti sauce
1 (15 oz.) can tomato sauce
3 lbs. Mozzarella cheese

Cook spaghetti and set aside. Brown hamburger, onion, salt and pepper; set aside. Mix together spaghetti sauce, tomato sauce, and hamburger. In 9 x 13 inch pan layer spaghetti, hamburger/sauce mixture, cheese; repeat. Save some sauce to serve with lasagna at table. Cook at 450 degrees for approximately 15 minutes; let stand 5 minutes. (Excellent for leftovers.)