1 lb. ground beef
1/2 c. chopped onion
6 oz. tomato paste
1 tsp. salt
1 tsp. oregano
1/4 tsp. garlic powder
6 buns split, toasted, buttered
Mozzarella cheese

Brown beef and onion, add paste and seasoning. Simmer uncovered 15 minutes. Spoon onto buns. Top with Mozzarella cheese.