1 lb. hamburger meat, browned
1 onion
1 1 lg. can tomato sauce

Add onion and tomato sauce to meat. Pour in pan. Sprinkle Mozzarella cheese over meat mixture. Put pan in oven until cheese melts. Mix in a bowl:

1 c. milk
1 c. flour
1 egg
1 tbsp. oil

When cheese melts pour mixture over meat. Spread evenly with Parmesan cheese. Cook in 400 degree oven. NOTE: You can add mushrooms, olives, pepperoni, etc. to meat mixture.