Upside Down Pizza

1 1/2 lb ground beef
1 onion, chopped
15 1/2 oz can spaghetti sauce
1/2 tsp garlic powder
8 oz mazzarella cheese, grated
Brown meat and onion, drain. Add sauce, garlic and pour in greased 9 x 13 pan. Sprinkle with cheese.
Mix together and pour over top:
2 eggs
1 cup milk
1 tbsp oil
1/2 tsp salt
1 cup self-rising flour

Bake at 350º for 30 minutes.