1 lb. ground beef
1 large onion, chopped
1 (1.5 oz.) pkg. spaghetti sauce mix
1 (15 oz.) can tomato sauce
1/2 c. water
2 eggs
2 c. (8 oz.) shredded Mozzarella cheese
1 c. milk
1 tbsp. oil
1 c. all-purpose flour
1/4 tsp. salt
1/2 c. grated Parmesan cheese

Cook ground beef and onion in a large skillet until meat is browned, stirring to crumble meat; drain. Add sauce mix, tomato sauce and water, stirring well. Simmer 10 minutes. Spoon meat mixture into a lightly greased 9 x 13-inch pan; sprinkle with Mozzarella cheese.

Beat eggs, milk and oil until foamy. Add flour and salt. Beat until smooth. Pour batter over meat mixture. Spread evenly. Sprinkle with Parmesan cheese.

Bake at 400°F for 30 minutes or until the top is puffed and golden brown. Serve hot.