Slow Cooker Mozzarella Stuffed Meatballs

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Juicy, flavorful Italian-style Slow Cooker Mozzarella Stuffed Meatballs – perfect for dipping in your favorite marinara or alfredo sauce! 

Slow Cooker Mozzarella Stuffed Meatballs

If you’re not following me on Instagram, you might not know that I’ve been in Sacramento for the past couple of days learning all of the ins and outs of Diamond of California and how their amazing walnuts go from the tree to my kitchen. My husband will tell you that I’m a bit of a workaholic, and there may be something to that claim. Lately though, I’ve realized life is flying by way to fast so I’ve been trying (key word: trying) to take little breaks, celebrate tiny personal victories, and savor the moment a little more.

When I arrived in Sacramento, I had a few hours to waste before I was scheduled to be anywhere. I hadn’t had lunch and a girl’s gotta eat, so naturally I beelined for the nearest Mexican cuisine I could find. It is California after all, they know their Mexican. But this story isn’t actually about the amazing chicken burrito bowl topped with 4 kinds of salsa I ate and nearly cried over. This story is about a girl and her gelato.

Slow Cooker Mozzarella Stuffed Meatballs

After my spi-cay lunch and a good walk around the city I was craving something sweet like it was nobody’s business and found a fancy-pants Italian place right on Capitol Mall called Il Fornaio. Inside this classy restaurant (with a floor-to-ceiling wall devoted to every kind of wine you can imagine) there was a teeny tiny bakery in the corner. As I stood in line, I glanced over the menu and saw mostly sandwiches but I spotted a ginormous chocolate chip cookie in the display case and decided that would definitely satisfy my sweet tooth. But then the lady in front of my walked away with a towering cup of ice cream! What?! That was not on the menu, trust me, I would have noticed. So I asked gal at the counter if they had any gelato. Indeed they did and the flavor of the day was…. Cookies n’ Cream.

It was fate.

Slow Cooker Mozzarella Stuffed Meatballs

I really really really love cookies n’ cream ice cream. And gelato?? Well that’s the cream of the crop as far as ice cream goes. Those Italians, they know what they’re doin’. So there I sat in the middle of downtown sacramento with a double scoop of gelato AND a ginormous king-sized soft-baked chocolate chip cookie. And this is where savoring the moment comes in to play. If I had just stayed at the hotel and worked on my computer all afternoon (and I did consider it, heavily) I wouldn’t have found that Italian restaurant with the teeny tiny bakery with the ginormous chocolate chip cookies and the most amazing gelato known to mankind.

If being less of a workaholic means more ice cream in my life, I’m on board. I mean, why didn’t you lead with that. I would have quit my job years ago.

Slow Cooker Mozzarella Stuffed Meatballs

Now on a less sweet, more savory, but equally delicious Italian note, let’s talk about the meatballs you will every taste, which also happen to be filled with ooey gooey melty mozzarella cheese and are made in a slow cooker. Yes, these are a crockpot wonder my friends. But! If you are short on time or don’t have a slow cooker or whatever, these can also be baked so you have no excuse not to be making, eating, and singing praises for these meatballs. The meatballs alone are wonderfully tasty and seasoned perfectly, but anything filled with cheese is better right?? As a side not, they also freeze very well if you want to make them ahead and bake or slow cook them at a later time!

Slow Cooker Mozzarella Stuffed Meatballs


What people are saying about these Slow Cooker Mozzarella Stuffed Meatballs

“This was so freaking good! I doubled the recipe and used the oven baked method and they came out extremely tender. To my own fault, I should have incorporated the bread crumbs better (had a few bites of highly seasoned crust!) but I’ll remember that for next time and there will be a NEXT TIME! My husband and kids loved them over spaghetti and sauce. Big hit and I can see how they will be great for parties. Even with the cheese seeping out, they still held up together.” – Kimberly 

“I tripled the recipe (wanted to save some for the freezer for another meal! :)) , and it was absolutely delicious. I did make the balls about 1/2 the size and still had lots of cheese left over. I made it gluten-free by using crushed Rice Chex instead of bread crumbs.” – Mary 

“Made these for dinner tonight with breadcrumbs made from our leftover gluten free bread (hubby is allergic to wheat) and I swear these are the best meatballs I’ve ever had! Thanks for sharing this recipe! Made twelve HUGE meatballs, so with a side of spaghetti, two dinners and two lunches worth 🙂” – Karen 

“I made this for my chris party on Saturday and everyone raved About them and they were gone in a hour! So good im making them for Dinner!!” – Jessie

Slow Cooker Mozzarella Stuffed Meatballs

Slow Cooker Mozzarella Stuffed Meatballs

Juicy, flavorful Italian style meatballs stuffed with melty mozzarella cheese - perfect for dipping in your favorite marinara or alfredo sauce!
4.37 from 11 votes
Prep Time: 15 minutes
Cook Time: 3 hours
Total Time: 3 hours 15 minutes
Servings: 4


  • 1 pound ground beef
  • 1 cup bread crumbs (panko or regular, Italian seasoned or plain)
  • 1 egg
  • 1 egg yolk
  • 1 teaspoon minced garlic (or 2 teaspoons garlic powder)
  • 1 teaspoon onion powder
  • 1 tablespoon Italian seasoning
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 3-4 mozzarella cheese sticks (string cheese)
  • marinara or alfredo sauce, for dipping


  • Chop each cheese stick into half inch pieces (about 6-8 pieces for each cheese stick). Place on a plate and chill in the freezer until ready to use.
  • Add ground beef, bread crumbs, egg and egg yolk, garlic, onion powder, Italian seasoning and salt and pepper to a bowl. Mush the ingredients together with your hands until everything comes together.
  • Remove cheese from freezer. Scoop out about 4 tablespoons of meat mixture and roll into a ball. Gently push a piece of chilled mozzarella into the middle of the meatball. Roll the ball in your hands to cover the hole where the mozzarella cheese was pushed in. Place inside a greased slow cooker and repeat with remaining meat and cheese.
  • When all meatballs are in the slow cooker (*see note for alternate cooking method), cover and cook on high for 1-2 hours or on low 3-4 hours until meat it cooked through (no longer pink). The cheese may start melting out of the meatballs, that's okay.
  • If desired, sprinkle with a bit of fresh chopped parsley or dried Italian seasoning for garnish. Serve with your favorite marinara or alfredo sauce for dipping. 


*For a quicker method, the meatballs can be baked. Follow directions to make meatballs, but instead of placing in the slow cooker, place meatballs 1 inch apart on a greased baking sheet and bake at 400°for 15-20 minutes until browned and cheese is melty.
**These can also be made ahead and frozen! Prepare the meatballs as instructed in the recipe but instead of putting them straight into the slow cooker (or the oven if baking), just place them side by side in a zip lock bag ( you may need two), seal and place in the freezer. When ready to cook them, follow recipe instructions and increase cooking time slightly to allow for thawing.
*This recipe makes about a dozen large meatballs. This works great for an appetizer or side dish. If you want to use this for a main dish, I'd recommend doubling the recipe to be safe.
Did You Make This Recipe?Tag @cremedelacrumb1 on Instagram and hashtag it #cremedelacrumb!

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Recipe Rating


5 stars
I swear most of what i look at and save are the 12 tomatoes recipes. Thank you for this. I am just starting use my slow cooker more often. This made me feel more successful as a cook.

I used 2 pounds of ground beef for the original recipe and doubled the remainder of the ingredients. I only managed to get 18 meatballs from the doubled ingredients…is the amount/meatball correct? I had cut enough cheesesticks into pieces and had to discard the remainder because I had touched them with my raw meat contaminated hands.

5 stars
So I’m not much of a cook and I’m probably about to sound dumb, but just to clarify.. Do I need an egg with the yolk or an egg with the yolk plus another yolk?

I’m obviously just a few years behind this post, but just recently found and saved it (meatballs are in the crockpot right now). Since I am not a “seasoned” cook (see what I did there ;)), are you able to refrigerate leftovers and reheat? Just curious if that had been done or is do-able given the string cheese inside. Thank you in advance!

    Yes, she mention she that you can freeze them (single layer, in a ziplock bag) in one of her responses to the comments.

Hi these look great! Going to try them tonight for my son, so thank you for posting. Do you think I could use quick cooking oats in place of the breadcrumbs as a gluten free alternative? Has anyone tried this yet? Thanks in advance.

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