Stromboli Sandwiches - cooking recipe

Ingredients

1 lb. ground beef
1 medium onion
1/2 c. tomato sauce
1/2 c. ketchup
2 Tbsp. Parmesan cheese
1/4 tsp. garlic powder
1/4 tsp. marjoram
1/4 tsp. oregano
sliced Mozzarella cheese

Preparation

Brown beef and onion together.
Add all other ingredients, except Mozzarella cheese.
Simmer for 30 minutes.
Cool and spoon mixture on buns (kaiser or hamburger).
Add 1 slice Mozzarella cheese on top of mixture.
Wrap sandwiches in foil.
Bake at 350\u00b0 for 30 minutes, or heat in microwave until cheese melts.