Slow Cooker Meatball Subs

Slow Cooker Meatball Subs

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Slow Cooker Meatball Subs

Slow Cooker Meatball Subs

Prep Time 10 minutes
Cook Time 6 hours
Servings 8


  • 1 package (28 to 32 ounces) frozen pre-cooked meatballs
  • 2 jars (24 ounces each) marinara sauce
  • 2 tsp dried Italian seasoning
  • 2 cups shredded mozzarella or 8 slices mozzarella or provolone
  • 6 to 8 sub sandwich rolls - split and toasted


  • Dump one jar of sauce in a slow cooker.
  • Dump in meatballs. Add Italian seasoning.
  • Pour the other jar of sauce on top, Cover and cook on low for 3 to 6 hours.
  • Serve meatballs with some sauce on toasted submarine sandwich buns. Top with some cheese.
  • You can place subs on a baking sheet and toast in a preheated 400 degree oven to melt cheese if you’d like.


Calories: 439kcal | Carbohydrates: 25g | Protein: 25g | Fat: 26g | Saturated Fat: 10g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 10g | Cholesterol: 83mg | Sodium: 444mg | Potassium: 272mg | Fiber: 1g | Sugar: 4g | Vitamin A: 205IU | Vitamin C: 1mg | Calcium: 166mg | Iron: 9mg

This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition data is gathered primarily from the USDA Food Composition Database, whenever available, or otherwise other online calculators.

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  1. Ashly Mathew says:

    If you’re doing this meatball recipe in high heat, how long would it cool for?

    1. Amy Hanten says:

      Hi Ashly,
      I’d cook for 2 to 3 hours on high in slow cooker. -Amy

  2. Hi Amy, I was wondering if I could take the same idea and make a chicken parmesan? With frozen chicken? Would it have to cook longer? Thanks!

  3. What kind of bag was that that was in the slow cooker-just a plastic bag or a oven bake bag?

  4. Hi Sharlene. I like to toast the buns in the oven on a cookiebefore you build the sandwich, maybe with a little butter and pinch of garlic salt on them. Then after you put the meatballs, sauce and cheese on you can stick them if for just a couple minutes to melt the cheese. if you foil line the baking sheet is saves on cleanup. Hope that helps! My kiddos love these!

  5. Do you toast the buns before adding the meat balls

  6. Hi Carol. I am in love with Slow Cooker liners. Reynolds makes them. You’ll find them in the aisle of your grocery store near the foil and plastic wrap. They make cleanup a breeze! Thanks! -Amy

  7. carol lundholm says:

    Question: I saw you make these on Monday but missed what “plastic bag”
    you put in the crock pot first. It looked like a good way to contain the
    cooking “mess”. What was it?

  8. Sound Yummy Will Try It.