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Effortless Crockpot Meatball Subs That Everyone Wants

Effortless Crockpot Meatball Subs Recipe. Let the crockpot simmer with marinara and meatballs and make these crockpot meatball subs lunch or dinner.

Just look at the recipe pictures. Everyone will be saying, “Yes Please” to these Crockpot Meatball Subs. 

Slow Cooker Meatball Subs

Effortless Slow Cooker Meatball Subs

This recipe is so easy and tastes so good! Nobody is going to judge you for using frozen meatballs and jarred sauce. Seriously we are not running an authentic Italian Kitchen here. And these sandwiches are ah-mazing. They hit the spot when a meatball sub craving hits! Meatball Sub recipe with frozen meatballs is the way to go! Simple and delicious. 

Effortless as in all you have to do is dump some frozen meatballs and jarred sauce in a slow cooker. 

Toast the hoagie rolls and dinner is served. 

Slow Cooker Meatball Subs Math

My 1.5 bag of frozen meatballs had enough meatballs for 7 sandwiches when each sandwich had 4 meatballs. 

When planning this meatball sub recipe with frozen meatballs check your bag of meatballs for a meatball count. The brand I used had 28 meatballs labeled on the bag. 


Crockpot Meatball Subs

Ingredients for Crock Pot Meatball Subs

  • One 1.5 pound bag of frozen Italian Style Meatballs
  • 7 hoagie rolls
  • 2 jars of marinara
  • 14 Sandwich style sliced mozzarella cheese.  
  • Grated Parmesan
  • Red Pepper Flakes
  • Fresh Parsley

Crockpot Meatball Subs

Slow Cooker Frozen Meatball Recipe

Frozen meatballs in a slow cooker equals delicious recipes. That is why there are so many slow cooker frozen meatball recipes.

Not wanting meatballs subs? Serve this recipe over spaghetti. 

More Crockpot Meatball Recipes

Crock Pot Party BBQ Sweet Chili Meatball Recipe.  

Bourbon Meatballs for Bourbon Lovers

Honey Garlic Crockpot Meatballs.


Crockpot Meatball Subs

Storing Leftovers

Remove meatballs and sauce from your slow cooker and transfer into an airtight container and refrigerate. They are good for up to 4 days. 

I don’t recommend making the sandwiches and then storing them. The sauce will make the hoagie rolls soggy. 

Also, you can change things up. Instead of making meatballs subs again you can make spaghetti. 

Crockpot Meatball Subs

Crockpot Meatball Subs Recipe

crockpot meatball subs
3.68 from 86 votes

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.
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