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** Slow Cooker Marinara Meatballs

Slow Cooker “Surprise” Marinara Meatballs

  • Cooking Time:

    6 hours on Low
  • Servings:



1 lb. Lean Ground Beef
1/2 lb. Lean Ground Veal
2 T. Italian Seasoning
1 Egg, slightly beaten
1/2 c. Milk (whole milk is preferred)
1/2 c. Breadcrumbs
1 tsp. Garlic Salt
Salt & Pepper, to taste
Mozzarella Cheese, 1/2 inch cubes
15 oz. Diced Tomatoes
28-32 oz. of your favorite Marinara Sauce

I LOVE a good ol’ Spaghetti & Meatballs and this Slow Cooker “Surprise” Marinara Meatballs is what I make when I’m craving a delicious dish.  The “surprise” in the meatballs is a pop of ooey-gooey mozzarella cheese in the center that adds some fun & flavor.

Like many kids, my daughter is not a fan of sauce on her noodles BUT she loves these meatballs and the fact that they have cheese inside! If you have a picky eater maybe he or she will love this recipe too. 🙂

  1. Combine all ingredients except mozzarella, diced tomatoes and marinara sauce in a large bowl.
  2. Mix these meatball ingredients well with your clean hands.
  3. Form each meatball around a piece of cubed mozzarella.  Meatballs should be slightly larger than a golf ball. This recipe makes approximately 24 meatballs. TIP: Make sure you create a firm meatball to prevent cheese from oozing out while cooking!
  4. Optional Browning step: Heat 2 T. of oil in a large skillet. Lightly brown meatballs on all sides. Remove from skillet and place meatballs on a paper towel lined plate to absorb grease. You can do this in one pot if you have the STOVETOP SAFE SLOW COOKER.
  5. Pour half of the marinara sauce and half of the diced tomatoes in a 6-Quart Slow Cooker.
  6. Gently place meatballs on top of tomato mixture in slow coker.
  7. Top meatballs with the remaining tomatoes and sauce. Add salt & pepper if desired.
  8. Cover & cook on LOW for 6-8 hours.
  9. Place meatballs and sauce from the slow cooker on top of cooked spaghetti.  These meatballs are also great for meatball sandwiches on toasted buns or as a pizza topping.


Happy Crocking!

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Meet Jenn Bare

Jenn is the founder of GetCrocked, the #1 resource for slow cooking with over 1.5 million online followers. She innovates recipes daily with her favorite tool in the kitchen, the Crock-Pot® slow cooker.

She innovates recipes daily...

Jenn Bare is a Mom, Chef & the Crock-Pot® Girl. She hosts a weekly "Mom Monday" segment on ABC-15 in Phoenix.

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