Slow Cooker Meatball Subs: The Ultimate Comfort Food

Introduction

There’s nothing more satisfying than a hearty, saucy, cheesy meatball sub—especially when it’s made effortlessly in a slow cooker! These Slow Cooker Meatball Subs are juicy, flavorful, and incredibly easy to make, making them perfect for busy weeknights, game day gatherings, or a cozy family dinner.

The slow cooker allows the meatballs to absorb all the rich flavors of the sauce, resulting in a tender and mouthwatering bite every time. Whether you like your meatballs classic, spicy, or extra cheesy, this recipe is easily customizable to suit your taste.

Why You’ll Love This Recipe

Effortless Cooking: The slow cooker does all the hard work—just mix, set, and forget!
Packed with Flavor: Slow cooking brings out deep, rich flavors in the sauce and meatballs.
Perfect for Meal Prep: Make ahead and enjoy throughout the week.
Great for a Crowd: Serve at parties, gatherings, or casual family meals.

Ingredients Needed

For the Meatballs:

  • 1 lb ground beef (or a mix of beef and pork)
  • ½ cup breadcrumbs
  • 1 egg, beaten
  • 2 cloves garlic, minced
  • ½ small onion, finely chopped
  • 1 tsp Italian seasoning
  • ½ cup Parmesan cheese, grated
  • Salt & pepper to taste

For the Sauce:

  • 1 can (28 oz) crushed tomatoes
  • 1 can (6 oz) tomato paste
  • 3 cloves garlic, minced
  • ½ small onion, finely chopped
  • 1 tsp dried basil
  • 1 tsp dried oregano
  • ½ tsp red pepper flakes (optional, for spice)
  • 1 tbsp olive oil
  • Salt & pepper to taste

For the Subs:

  • 4 hoagie rolls or sub sandwich buns
  • 1 cup mozzarella or provolone cheese, shredded
  • Fresh basil or parsley for garnish

Step-by-Step Guide to Making Slow Cooker Meatball Subs

1. Prepare the Meatballs

  • In a large bowl, combine ground beef, breadcrumbs, egg, garlic, onion, Parmesan, Italian seasoning, salt, and pepper.
  • Mix until just combined—don’t overwork the meat.
  • Shape into golf ball-sized meatballs (about 12-15).
  • Optional: Brown meatballs in a skillet over medium heat for 2-3 minutes per side (this helps lock in flavor).

2. Prepare the Sauce

  • In the slow cooker, mix together crushed tomatoes, tomato paste, garlic, onion, basil, oregano, red pepper flakes, olive oil, salt, and pepper.

3. Slow Cook the Meatballs in the Sauce

  • Add the meatballs to the sauce, ensuring they are fully submerged.
  • Cover and cook on LOW for 6 hours or HIGH for 3-4 hours until the meatballs are tender.

4. Assemble the Subs

  • Preheat the oven to 375°F (190°C).
  • Slice the hoagie rolls and lightly toast them for extra crispiness.
  • Place 3-4 meatballs in each roll and spoon extra sauce over them.
  • Sprinkle with shredded mozzarella or provolone cheese.
  • Bake for 5 minutes until the cheese is melted and bubbly.
  • Garnish with fresh basil or parsley and serve hot!

Tips for the Best Slow Cooker Meatball Subs

Use sturdy bread like hoagie rolls to prevent sogginess.
Browning the meatballs before slow cooking enhances flavor.
Toast the buns for added crunch and better texture.
Customize the spice level by adjusting the red pepper flakes.

Variations and Substitutions

🔥 Spicy Version: Add extra red pepper flakes or hot sauce to the sauce.
🍗 Healthier Option: Use ground turkey or chicken instead of beef.
🌱 Vegetarian Option: Substitute meatballs with plant-based alternatives.

What to Serve with Meatball Subs

🍟 French Fries or Sweet Potato Fries – Classic side dish.
🥗 Simple Green Salad – Balances out the richness of the subs.
🧄 Garlic Bread – Perfect for dipping in extra sauce!

How to Store and Reheat Leftovers

Refrigerate: Store meatballs and sauce in an airtight container for up to 4 days.
🧊 Freeze: Freeze cooked meatballs and sauce for up to 3 months.
🔥 Reheat: Warm in a saucepan over medium heat or microwave until heated through.

Conclusion

Slow Cooker Meatball Subs are the ultimate comfort food—easy, flavorful, and perfect for any occasion! Whether you’re hosting a party, feeding your family, or meal prepping for the week, this recipe is guaranteed to satisfy.

Give it a try and enjoy the best homemade meatball sub you’ve ever had!

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