Easy Slow Cooker Meatball Subs

If the thought of making homemade meatballs is a daunting one, keep on reading because these meatball subs recipe in the slow cooker is a keeper.

This recipe does not require baking, transferring, dumping, or frying your meatballs. It’s a stress-free and busy-mom dream recipe!

And what’s better than awesome family-friendly dinner ideas like this one? Recipes that yield leftovers for lunch the next day!

Easy Weeknight Meal

We all love recipes that require minimal effort when you have a family ready to eat, which is why these meatballs made in the slow cooker are always a favorite meal, even on a weeknight!

Recipes like this can be made in bulk and enjoyed more than once -more on this below- like serving it over spaghetti the first night and turning leftovers into subs.

Ingredients

Let’s take a trip to the kitchen and check your fridge and pantry for these items, and be sure to grab the printable recipe card below for measurements and full instructions.  

• Onion: adds flavor to the tomato sauce. 
• Ground turkey: can be swapped out with lean ground beef. 
• Bread crumbs: adds some heftiness to the meatballs.
• Egg: helps the ground meat and breadcrumbs stick together. 
• Italian seasoning: a combination of basil, oregano, and thyme. 
• Garlic powder: easy to sprinkle into the meat mixture. 
• Salt: makes everything taste better. 
• Parmesan cheese: has a sharp, cheesy flavor that belongs in meatballs.   
• Diced tomatoes: Italian-style tomatoes are optimal, but petite diced also work. 
• Pasta sauce: use your favorite jarred tomato-based pasta sauce. 
• Shredded mozzarella cheese: THE cheese for meatball subs!
• Hoagie sub bread rolls: could also use a French baguette sliced into 5-inch sections. 

How to Make Meatball Subs in the Slow Cooker

Whether you make the meatballs the night before and turn the crockpot on in the morning or do it all at once the same day, coming home to a great-smelling kitchen and a dinner ready to be eaten is the best feeling ever! Here is what you’ll be doing:

1. Make a base layer
   Chop the onion and add it to the bottom of your slow cooker dish. 
2. Prepare the meatballs
   Combine the ground meat, bread crumbs, eggs, and seasonings in a large bowl. Once the mixture is cohesive, roll it into 16 golf-sized meatballs. 
3. Set to cook
   Stack the meatballs in an even layer in the slow cooker and top them with the tomatoes and pasta sauce. Cover with lid and cook for 3-6 hours. 
4. Assemble
   Slice or fold open each hoagie roll, sprinkle a little cheese at the bottom, and top with meatballs and some sauce. Sprinkle additional cheese and enjoy. 

Make-Ahead Tips

Meatball recipes like this one can be fully prepped ahead by making the meatballs, placing them inside the slow cooker with the other ingredients as noted in the recipe and then refrigerated overnight covered with plastic wrap.

In the morning, all you have to do is remove the bowl of the slow cooker from the refrigerator, place it inside the crockpot, and set it to cook.

By dinnertime, you’ll have a delicious dinner waiting for you!

Doubling and Tripling the Recipe

You can double or triple the meatball recipe for gatherings, extra guests, or freezing. Grab a larger bowl and get rolling.

You can freeze these uncooked on a lined sheet pan, and once frozen, transfer them to a zip bag and kept frozen for up to 3 months. When you’re ready for fresh meatballs, take however many you need out of the freezer, put them in the slow cooker with sauce, and you’re ready to go.

How to Store Leftovers

Once cooled, you can store leftover meatballs in an airtight container or zip bag in the refrigerator for up to 5 days. Alternatively, you can freeze them with sauce for up to 3 months.

Avoiding Soggy Buns

While soggy buns can put a damper on your sub-enjoyment experience, there are several easy things you can do to prevent this.

Make a layer of cheese
Instead of topping the subs with all the cheese, distribute some of it under the meatballs. With the heat, the melty later will also make a barrier between the cheese and the bread. You can also use sliced cheese.

Serve immediately
Don’t let the assembled subs sit out longer than necessary since this gives the bread time to soak up the sauce.

Slow Cooker Meatball Subs

Servings: 4

Prep Time: 10 minutes mins

Cook Time: 3 hours hrs

Total Time: 3 hours hrs 10 minutes mins

These meatball subs made in the slow cooker are the perfect recipe for families who want a ready-made meal on the table with minimal effort.

5 from 15 votes

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Ingredients

• 1 small onion, chopped
• 1 pound ground turkey
• ½ cup bread crumbs
• 1 large egg, lightly beaten
• 2 tablespoons Italian seasoning
• ½ teaspoon garlic powder
• ½ teaspoon salt
• ¼ cup grated Parmesan cheese
• 14- ounce jar of petite diced tomatoes
• 24- ounce jar pasta sauce, or homemade
• ½ cup shredded mozzarella cheese
• 4 hoagie sub bread rolls
• Chopped parsley, optional

Instructions

• Spread the onion evenly onto the bottom of the slow cooker dish. 
• In a large bowl, mix the ground meat with bread crumbs, egg, seasonings, and Parmesan cheese. 
• Use your hands to roll the mixture into golf-sized balls (about 2 tablespoons per meatball) and layer them evenly inside the slow cooker dish. Pour the can of tomatoes and pasta sauce over the meatballs. 
• Cover the dish with the lid and cook on low for 6 hours or high for 3 hours.
• To serve, slice or fold open each hoagie roll, sprinkle a little cheese at the bottom, and top with meatballs and some sauce. Sprinkle additional cheese and enjoy. 

Notes

Yields about 2 ½ dozen small meatballs

Equipment

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Slow Cooker

Slow Cooker Liners

Nutrition

Serving: 1 serving | Calories: 442kcal | Carbohydrates: 43g | Protein: 36g | Fat: 15g | Saturated Fat: 5g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 5g | Trans Fat: 0.1g | Cholesterol: 135mg | Sodium: 1712mg | Potassium: 1130mg | Fiber: 6g | Sugar: 12g | Vitamin A: 1115IU | Vitamin C: 23mg | Calcium: 369mg | Iron: 7mg