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crockpot meatball subs

Crock Pot Meatball Subs

Slow Cooker Meatball Sub recipe with frozen meatballs. 

Course Main Course
Cuisine American
Keyword Crockpot Meatball Subs, Meatball Sub Recipe with Frozen Meatballs, Slow Cooker Frozen meatball recipe
Prep Time 10 minutes
Cook Time 4 hours
Total Time 4 hours 10 minutes
Servings 7
Calories 526 kcal
Author Stephanie Jackson


  • 2 24 oz. jars Marinara
  • 1.5 pounds frozen Italian Style Meatballs
  • 7 hoagie rolls
  • 14 slices mozzarella cheese
  • Grated Parmesan cheese garnish
  • fresh parsley leaves, chopped garnish
  • red pepper flakes garnish


  1. Place frozen meatballs in a slow cooker. 

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

  3. Cover and cook on high for 4 hours. 

  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. 

  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. 

  6. Add about 4 to 5 meatballs to each hoagie roll. 

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

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

Nutrition Facts
Crock Pot Meatball Subs
Amount Per Serving (1 g)
Calories 526 Calories from Fat 198
% Daily Value*
Fat 22g34%
Carbohydrates 49g16%
Protein 31g62%
* Percent Daily Values are based on a 2000 calorie diet.