Step 1

Place frozen meatballs in a slow cooker.

Step 2

Pour both jars of marinara over the top of the frozen meatballs.

Step 3

Cover and cook on high for 4 hours.

Step 4

Preheat your oven to 350 F. Open your hoagie rolls so the inside will get toasted. Place your rolls on a baking sheet and toast for about 5 mins.

Step 5

Add 2 slices of Mozzarella cheese to each hoagie roll and return the rolls to the oven. Continue to toast for 5 minutes or until cheese is melted.

Step 6

Add about 4 to 5 meatballs to each hoagie roll.

Step 7

Garnish with grated Parmesan, chopped parsley and a sprinkle of red pepper flakes.

Step 8

Serve with a side of additional sauce from the slow cooker.