1 jar spaghetti sauce
Spaghetti noodles
Mozzarella cheese
1 lb. hamburger

Prepare spaghetti sauce and noodles. Place a layer of noodles in a lightly greased baking dish. Cover with sauce, then sprinkle with 1/4 of cheese. Repeat layers until dish is full (the more cheese, the better). Bake at 350 degrees for 20 to 30 minutes.