1 lb. ground beef
1 med. onion, chopped
1/2 c. catsup
1/2 c. tomato paste
1 tsp. oregano
4 tsp. brown sugar
1 1/4 tsp. dry mustard
1 tsp. salt
1 c. Mozzarella cheese, grated

Brown ground beef and onion and drain off grease. Add catsup, tomato paste, oregano, brown sugar, dry mustard and salt. Simmer 1/2 hour. Cool then mix in grated cheese, spread on buns. Bake at 425 degrees for 15 minutes on cookie sheet.