This easy recipe for Crockpot Meatball Subs combines frozen Italian-style meatballs with a flavorful marinara sauce, garlic, parsley, and black pepper, slow-cooked to perfection. The meatballs absorb the rich sauce, creating a mouthwatering taste that pairs perfectly with melted provolone cheese inside toasted hoagie buns for a quick and hearty meal
Add marinara sauce, garlic, parsley, and black pepper to a 6-quart slow cooker. Mix until well combined.
Pour the meatballs into the sauce and stir until they are all coated.
Cover and cook on high or for 3 hours or low for 5 hours. Stir occasionally.
Preheat your oven to 350℉. Open your hoagie rolls, put two pieces of cheese in them, and then place them on a baking sheet. Bake for about 5 minutes or until cheese is melted.
Add 4-5 meatballs to each hoagie roll and garnish with grated cheese.