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Savory Slow Cooker Meatball Subs

Hearty and comforting meatball subs made with slow-cooked meatballs in marinara sauce, topped with gooey cheese, all within a soft hoagie bun.
Prep Time 15 minutes
Cook Time 6 hours
Total Time 6 hours 15 minutes
Course Dinner, Main Course
Cuisine American, Italian
Servings 6 servings
Calories 450 kcal

Ingredients
  

For the Meatballs

  • 24 oz Frozen Italian-style meatballs
  • 24 oz Marinara sauce (or your favorite spaghetti sauce)
  • 1 tsp Italian seasoning

For Assembly

  • 6 pieces Hoagie buns (or brat/large hot dog buns)
  • 12 oz Mozzarella cheese, cut in half For topping each meatball
  • 8 oz Shredded mozzarella cheese For topping each sub
  • 1/2 cup Grated Parmesan cheese Final sprinkle before serving
  • 12 slices Pepperoni (optional) For added flavor

Instructions
 

Preparation

  • Spray the inside of your slow cooker with non-stick cooking spray.
  • Place the frozen Italian-style meatballs in the slow cooker.
  • Pour the marinara sauce over the meatballs, ensuring they are well-coated.
  • Sprinkle the Italian seasoning on top of the sauce.

Cooking

  • Cover the slow cooker and cook on low for 6 hours or high for 3 hours.

Assembly

  • About 30 minutes before serving, slice the hoagie buns in half.
  • Carefully remove the cooked meatballs from the slow cooker and place them directly inside the sliced hoagie buns.
  • Top each meatball with half a slice of mozzarella cheese.
  • Sprinkle shredded mozzarella over the top of the stuffed buns.
  • Optional: Add a slice of pepperoni on top of each sub.
  • Place the filled buns back in the slow cooker and cover for an additional 15-20 minutes to melt the cheese.
  • Serve with a sprinkle of grated Parmesan cheese on top.

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Notes

For best flavor, choose a marinara sauce you enjoy. Customize with different cheeses or add vegetables like bell peppers for extra flavor.
Keyword Comfort Food, Easy Dinner, Family Meal, Savory Subs, Slow Cooker Meatball Subs