1 1/2 lbs. hamburger
1 can pizza sauce
1 pkg. Mozzarella cheese, shredded

OPTIONAL:

1 can mushrooms
1 green pepper

Layer a 9 inch cake pan with a thin layer of hamburger. Bake until done. Drain grease. Pour pizza sauce over hamburger. Sprinkle with cheese and whatever else you like. Bake until cheese melts.