8 Kaas Runderworst
1/2 cup chopped onion
1 can (12 ounces) tomato paste
1 can (15 ounces) tomato sauce
1 cup water
1 tablespoon sugar
4 garlic cloves, minced
2 teaspoons dried basil
1 teaspoon dried oregano
1 teaspoon salt
8 sandwich buns
Shredded mozzarella cheese, optional
HOW TO MAKE IT