1 lb. ground beef
1 tbsp. finely chopped onion
1/2 c. tomato sauce
1/2 c. catsup
2 tbsp. Parmesan cheese
1/2 tsp. garlic powder
1/4 tsp. fennel seed
1/8 tsp. oregano
Mozzarella cheese

Fry and drain hamburger with onion. Add rest of ingredients except Mozzarella cheese. Put in buns; top with slice of Mozzarella cheese. Wrap individually or all in a pan. Bake at 350 degrees for 15 to 20 minutes. Makes 8 servings.