I think I just fell in love with my slow cooker again. These slow cooker meatball subs are so incredibly tender, flavorful, and just all-around decadent thanks to that low and slow simmer in marinara sauce. It’s magical! And the best part is that this recipe makes a pretty big batch, so you can freeze half for later (use them in subs or on pasta)! Cook once, eat twice. 🙌
Do I Have to Use a Slow Cooker?
You don’t have to use a slow cooker to make these amazing homemade meatball subs, but I’m telling you right now that you want to. That low and slow simmer in the sauce makes the most incredibly tender and flavorful meatballs you’ll ever eat. If you don’t have a slow cooker, follow the cooking instructions for my basic homemade meatballs, then pile them into your buns, top with cheese, and bake till the cheese is melted.
What Kind of Sauce to Use
I tested this recipe with the most basic, inexpensive, generic marinara sauce I could find at the grocery store to make sure they were still totally delicious even if you can’t spring for an expensive sauce. But feel free to use your favorite store-bought or homemade marinara sauce for these meatballs. You’ll need 3 cups of sauce, in total.
Freeze Half for Later!
This recipe makes about 24 hefty meatballs so if you use three meatballs per sub you’ll get 8 sandwiches. If that’s a little too much for your household to eat within a few days, go ahead and freeze half of the meatballs and sauce to use on pasta or more subs later! You can reheat the frozen sauce and meatballs in the microwave or in a saucepot over low heat.
P.S. We reheated the assembled meatball subs from the photos in the air fryer the next day and they were BOMB! We air fried at 350°F for about five minutes for the most delicious leftovers ever.
Slow Cooker Meatball Subs
- 1/2 cup breadcrumbs $0.32
- 1/2 cup grated Parmesan $0.88
- 1/2 tsp garlic powder $0.05
- 1/2 tsp onion powder $0.05
- 1/2 tsp Italian seasoning $0.05
- 1/4 tsp salt $0.02
- 1/4 tsp pepper $0.02
- 2 large eggs $0.39
- 1/4 cup milk $0.05
- 1 lb. Italian sausage $4.99
- 1 lb. lean ground beef (90% lean or higher) $6.99
- 8 buns or rolls $3.50
- 1/2 cup shredded mozzarella $0.62
- Lightly whisk two large eggs in a small bowl. In a separate small bowl, combine the breadcrumbs, Parmesan, garlic powder, onion powder, Italian seasoning, salt, and pepper.
- Add the Italian sausage and ground beef to a large bowl with the whisked egg, breadcrumb mixture, and milk Use your hands to mix the ingredients together. Avoid overmixing the meat.
- Divide and shape the meat into 24 meatballs, about 3 Tbps each. The easiest way to do this is to first divide the meat mixture into four equal portions, then divide each of those in half to make eight equal portions. Finally, divide each of the 8 portions of meat into thirds and shape them into balls to make 24 meatballs.
- Place half of the meatballs in the bottom of a slow cooker in a single layer and cover with half of the marinara sauce. Add the rest of the meatballs then top with the remaining sauce.
- Cook the meatballs on high for three hours or low for six hours.
- After cooking, use a meat thermometer to make sure the internal temperature of the meatballs has reached 165°F. Give the meatballs and sauce a good stir to remix the sauce (there will be some fat pooling on the surface).
- Preheat the oven to 350°F. Place the buns on a baking sheet or in a baking dish, then pile three meatballs into each bun. Spoon some of the extra sauce over each one. Top each sub with a little shredded cheese.
- Bake the meatball subs in the preheated oven for about 5 minutes, or until the cheese is melted and the edges of the buns are toasty. Enjoy hot!
How to Make Slow Cooker Meatball Subs – Step by Step Photos
Lightly whisk two large eggs in a small bowl. In a separate small bowl, combine ½ cup breadcrumbs, ½ cup grated Parmesan, ½ tsp garlic powder, ½ tsp onion powder, ½ tsp Italian seasoning, ¼ tsp salt, and ¼ tsp pepper. Pre-mixing these ingredients helps them incorporate more evenly into the meat without having to overmix the meat.
Add the whisked egg, breadcrumb mixture, ¼ cup milk, 1 lb. Italian sausage, and 1 lb. ground beef to a bowl. Use your hands to mix the ingredients together.
Divide and shape the meat mixture into 24 meatballs. The easiest way to divide the mixture evenly is to first divide it into four equal portions. Divide each of those in half to make eight equal-sized pieces. Finally, dive each of the eight sections into three meatballs.
Add half of the meatballs to the slow cooker in a single layer, then cover with half of the marinara sauce. Add the rest of the meatballs in a second layer and pour the remaining sauce over top, making sure all the meatballs are covered in sauce.
Place the lid on the slow cooker and cook on high for three hours or low for six hours.
After cooking, use a meat thermometer to make sure the internal temperature of the meatballs has reached 165°F. You’ll see some fat pooling on the surface, but don’t worry, that deliciousness will be stirred right back into the sauce.
Stir the meatballs in the sauce to make sure everything is evenly combined. These meatballs can now be used in subs or even on a plate of pasta!
To make the meatball subs, preheat the oven to 350°F. Place your buns on a baking sheet or in a baking dish. Fill each bun with three meatballs and spoon some of the sauce over top.
Top each sub with a little shredded mozzarella.
Bake the meatball subs in the preheated oven for about 5 minutes, or until the cheese is melted and the edges of the buns are toasty.
Enjoy the meatballs hot! I garnished with chopped parsley for some color, but the parsley isn’t needed for flavor. 🙂
TRY THESE OTHER MEATBALL RECIPES:
- BBQ Meatballs with Cheese Grits
- Teriyaki Meatball Bowls
- Spinach Feta Turkey Meatballs
- Chicken Parmesan Meatballs
- Giant Slow Cooker Meatballs
- Turkey and Stuffing Meatballs
- Sheet Pan BBQ Meatballs
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