Mom's Stomboli Sandwiches

I grew up eating these sandwiches and they are so easy but yummy.

1 lb. beef
1/2 c. tomato sauce
1/2 c. ketchup
2 tsp. parmesan cheese
1/2 tsp garlic
1/4 tsp marjoram
1/4 tsp oregano
1/4 tsp. basil
1 onion
salt and pepper

Onion rolls
Mozarella cheese slices

Brown meat and chopped onion. Drain and add other ingredients. Simmer for 10 min. Spoon onto ONION ROLLS (very important). Place slice of mozarella on filling. Wrap sandwiches in foil and heat at 350 for 15 min.