Ingredients
Method
- Add meatballs and marinara to a freezer bag. Freeze flat.
- Thaw overnight in the refrigerator.
- Pour everything into a slow cooker. Cook on low for 4 to 5 hours.
- Spoon meatballs into rolls and top with mozzarella and Parmesan.
- Broil for 1 to 2 minutes, watching closely, until the cheese melts.
