Introduction
While traditional meatballs are a classic comfort food, these keto-friendly air fryer meatballs take the dish to a whole new level. You’ll love how the melted mozzarella creates an irresistible cheesy center while keeping your carb count low. I’ve perfected this recipe through countless test batches, and I can tell you – the air fryer makes all the difference.
If you’re following a ketogenic diet but missing Italian cuisine, you’re in for a treat. These meatballs pack all the flavor you crave without the breadcrumbs or added fillers. They’re perfectly seasoned, incredibly juicy, and ready in just minutes. Plus, they’re versatile enough to pair with zucchini noodles or serve as a protein-packed appetizer. Trust me, once you try these cheese-stuffed meatballs, they’ll become your new keto comfort food go-to.
Recipe

Cheese-stuffed keto meatballs prepared in the air fryer offer a delicious low-carb alternative to traditional Italian meatballs. These juicy meatballs feature a perfectly browned exterior with melted mozzarella cheese hidden inside, creating a satisfying combination of textures and flavors.
This easy-to-prepare dish requires minimal ingredients while delivering maximum flavor, making it an excellent option for busy weeknight dinners. The air fryer method guarantees even cooking and eliminates the need for excess oil, while still achieving that desirable golden-brown crust.
- 1 pound ground beef (80/20)
- 4 ounces mozzarella cheese, cut into ½-inch cubes
- 1 large egg
- 1 tablespoon Italian seasoning
- 1 teaspoon salt
In a large bowl, combine ground beef, egg, Italian seasoning, and salt until well mixed. Divide the mixture into 8 equal portions and flatten each in your palm. Place a mozzarella cube in the center of each portion, then carefully wrap the meat around the cheese, making sure it’s completely sealed. Place the formed meatballs in the air fryer basket, leaving space between each one. Cook at 375°F for 12-14 minutes, or until the internal temperature reaches 165°F.
When forming the meatballs, make sure the cheese is completely enclosed to prevent leaking during cooking. Work with cold ingredients to make handling easier, and lightly wet your hands to prevent the meat mixture from sticking. For consistent cooking, make all meatballs roughly the same size. Allow the cooked meatballs to rest for 2-3 minutes before serving to prevent the cheese from being too runny when cut.
Prep Time
Getting these keto meatballs ready for the air fryer takes about 15-20 minutes of hands-on prep time. You’ll spend most of that time mixing the ingredients and carefully wrapping the meat around those precious cubes of mozzarella. Trust me, it’s worth taking your time to seal them properly – nobody wants cheese leaking all over their air fryer basket!
The actual process is pretty straightforward: combine your ground beef with seasonings and egg (about 5 minutes), cut your cheese into cubes (3 minutes), then portion and stuff the meatballs (10-12 minutes). If you’re meal prepping, you can even form these beauties ahead of time and keep them covered in the fridge until you’re ready to cook.
Equipment needed
Although these keto meatballs don’t require fancy equipment, you’ll need a few basic kitchen tools to make them successfully. First, you’ll want a large mixing bowl for combining your meat mixture and a reliable air fryer with a basket that’s at least 4 quarts in capacity.
Keep these essential tools handy:
- Kitchen scale (for portioning meat)
- Measuring spoons
- Meat thermometer
- Medium-sized bowl for holding prepared meatballs
- Clean cutting board
- Sharp knife (for cubing cheese)
I recommend using an air fryer with a removable, dishwasher-safe basket – trust me, it makes cleanup so much easier. If you’re making a larger batch, you might also want to keep a baking sheet with a wire rack in a warm oven to hold the cooked meatballs.
Basic Cooking Method and Time
Once you’ve prepared your meatballs, you’ll cook them in your preheated air fryer at 375°F for 12-14 minutes. Watch for the meatballs to turn golden brown on the outside while keeping an eye on that internal temperature – you’re aiming for 165°F for food safety.
You’ll know they’re done when they’re nicely browned and firm to the touch. I always let mine rest for 2-3 minutes after cooking, which helps the melted cheese settle instead of oozing out immediately. If you need to cook in batches, keep your first round warm in the oven at 200°F while you finish the rest. The best part? When you cut into these beauties, you’ll find perfectly melted mozzarella waiting inside.
Cooking Steps
Let’s plunge into the simple steps for making these cheesy keto meatballs. First, combine your ground beef, egg, Italian seasoning, and salt in a large bowl, mixing until everything’s well incorporated. Next, divide your meat mixture into 8 equal portions.
Here’s where the fun starts – flatten each portion in your palm, pop a mozzarella cube in the center, and carefully wrap the meat around it. You’ll want to seal those edges really well to keep the cheese from escaping. Once you’ve formed all your meatballs, place them in your air fryer basket, making sure they’re not touching each other. Set your air fryer to 375°F and cook for 12-14 minutes, until they’re nicely browned and reach an internal temperature of 165°F.
Step 1. Mix Meat and Seasonings Thoroughly

Diving into your bowl of meat and seasonings with clean hands creates the perfect starting point for these amazing keto meatballs. You’ll want to mix the ground beef, egg, Italian seasoning, and salt until everything’s evenly distributed throughout the mixture. I’ve found that using your fingers to gently break up and blend the ingredients works better than using utensils.
Don’t overmix the meat, though – that’s a mistake I learned the hard way. You’re looking for the seasonings to be well incorporated, but the meat should still have a loose, light texture. When you see the Italian herbs evenly spread throughout and the egg fully blended in, you’ll know you’ve reached the sweet spot. The mixture should feel cohesive but not compressed or paste-like.
Step 2. Form Balls With Cheese Inside

The fun part of making these meatballs starts with creating the perfect cheese-filled centers. After you’ve mixed your meat with seasonings, divide it into 8 equal portions – I like to use a kitchen scale for accuracy, but eyeballing works too. Take each portion and flatten it in your palm until it’s about ½-inch thick.
Place a cube of mozzarella right in the center of your flattened meat disc. Now comes the essential part: carefully wrap the meat around the cheese, making sure there aren’t any gaps or thin spots. You’ll want to seal it completely to prevent the cheese from escaping during cooking. Roll the meatball between your palms until it’s nice and round. Trust me, there’s nothing worse than cheese leaking out in your air fryer!
Step 3. Preheat Air Fryer

Preheating your air fryer is an essential step that many people skip, but I’ve learned from experience that it makes a big difference in how evenly these cheese-stuffed meatballs cook. Just like you’d preheat your regular oven, set your air fryer to 375°F and let it warm up for 3-5 minutes before adding the meatballs.
I once made the mistake of skipping this step, and my meatballs didn’t develop that beautiful golden-brown crust I was hoping for. While your air fryer’s heating up, you can use this time to do a final check on your meatballs, making sure they’re all sealed properly. Trust me, taking these few extra minutes will help you achieve that perfect crispy exterior while keeping all that delicious cheese safely inside.
Step 4. Place Meatballs in Basket

Carefully arrange your meatballs in the preheated air fryer basket, making sure to leave about an inch of space between each one. This spacing is essential for proper air circulation, which will give you that perfect golden-brown crust on all sides. If you’re cooking all eight meatballs at once, you’ll probably need to work in two batches depending on your air fryer’s size.
Don’t worry if you need to cook in batches – it’s better than overcrowding the basket. Place the meatballs seam-side up first, as this helps prevent the cheese from leaking out during cooking. I’ve learned from experience that squeezing too many meatballs into the basket leads to uneven cooking and can cause the cheese to burst through the sides.
Step 5. Cook Until Browned Throughout

Once your meatballs are properly spaced in the basket, you’ll want to cook them at 375°F for 12-14 minutes until they’re beautifully browned on all sides. You’ll know they’re done when they reach an internal temperature of 165°F – I always keep my meat thermometer handy for this step.
During cooking, resist the urge to open the air fryer too often, as this will release the heat and extend cooking time. If you notice any cheese starting to leak, don’t worry – it’ll create deliciously crispy cheese bits around the meatballs. Keep an eye on the color through your air fryer’s window; you’re looking for a rich, golden-brown exterior. Once they’re done, let them rest for 2-3 minutes before serving to prevent burning your mouth on the hot cheese center.
Customization Options
These keto meatballs can be customized in so many delicious ways to keep your meals exciting. You’ll love trying different cheese variations – try sharp cheddar for a tangy kick, pepper jack for some heat, or even blue cheese for an intense flavor punch. I’ve found that mixing in finely chopped mushrooms or spinach adds nutrients while keeping carbs low.
For seasoning switches, you can swap the Italian blend for taco seasoning to create Mexican-style meatballs, or use Greek seasonings with feta cheese for a Mediterranean twist. Don’t be afraid to experiment with different ground meats too – turkey, chicken, or a pork-beef blend all work great. Just remember to maintain the same meat-to-cheese ratio for the best results when making substitutions.
Ingredients list (with precise measurements)

Now that you’ve got some creative ideas for mixing up your meatball flavors, let’s break down exactly what you’ll need for the classic version of these cheesy keto bites.
For perfect cheese-stuffed meatballs, you’ll need:
- 1 pound ground beef (I recommend 80/20 for best flavor and moisture)
- 4 ounces mozzarella cheese, cut into ½-inch cubes
- 1 large egg
- 1 tablespoon Italian seasoning
- 1 teaspoon salt
I’ve found these simple ingredients create the most flavorful results while keeping the carbs super low. You’ll notice there’s no breadcrumbs or fillers – that’s what makes these truly keto-friendly! The egg acts as our binder, while the 80/20 beef provides enough fat to keep everything juicy and delicious.
Storage Information
While keto meatballs taste best fresh from the air fryer, I’ve found they store beautifully for several days when handled properly. Let them cool completely, then place them in an airtight container with wax paper between layers to prevent sticking. They’ll keep in your refrigerator for up to 3 days.
When you’re ready to enjoy your leftover meatballs, I recommend reheating them in the air fryer at 350°F for 2-3 minutes. This method helps maintain their crispy exterior while warming the cheese center perfectly. You can also freeze these meatballs for up to 2 months – just wrap them individually in plastic wrap, then store them in a freezer bag. To reheat from frozen, add an extra 2-3 minutes to the air fryer time.
Health Benefits or Special Features
Beyond their convenient storage options, the health benefits of these keto meatballs make them a powerhouse choice for anyone following a low-carb lifestyle. You’ll get plenty of protein from the ground beef, which helps maintain muscle mass while keeping you feeling full. The mozzarella adds calcium and healthy fats that are essential for ketosis.
What’s really special about these meatballs is their versatility in your keto meal plan. They’re naturally gluten-free, and you won’t miss the breadcrumbs one bit. Each meatball packs about 20 grams of protein and only 1 gram of carbs, making them perfect for hitting your macro goals. Plus, the air fryer method means you’re using less oil than traditional frying, while still getting that deliciously crispy exterior you crave.
Prep Time
Getting these keto meatballs ready takes just 15 minutes of hands-on prep time. You’ll spend most of that time dividing and shaping the meat mixture, which goes quickly once you get into a rhythm. I’ve found that wetting your hands slightly helps prevent the meat from sticking while you’re working with it.
The actual assembly is straightforward – just mix your ingredients, portion the meat, and wrap each piece around a cheese cube. You don’t need any special equipment beyond measuring spoons and a mixing bowl. I like to prep all my cheese cubes first, then line them up alongside my portioned meat for efficient assembly. If you’re making a double batch, you can easily prep the second set while the first batch cooks in the air fryer.
Cook Time
Once you’ve prepped your meatballs, the actual cooking time is surprisingly quick at just 12-14 minutes in the air fryer. You’ll want to set your air fryer temperature to 375°F and arrange the meatballs in a single layer, making certain they’re not touching each other. This guarantees even browning and proper cooking throughout.
Keep an eye on the meatballs during the last few minutes of cooking – they’re done when they reach an internal temperature of 165°F. If you’re cooking multiple batches, you can keep the first batch warm in your oven at 200°F while the others finish up. Remember to let each batch rest for 2-3 minutes after cooking, which helps the melted cheese settle and prevents any tongue-burning surprises!
Total Time
The complete preparation and cooking process for these keto meatballs takes about 25-30 minutes from start to finish. You’ll spend about 10-12 minutes mixing ingredients and forming the meatballs, making sure each cheese cube is well-sealed inside. The air fryer cooking time is 12-14 minutes, and you’ll want to add a few minutes of resting time at the end.
If you’re making multiple batches, you might need to add an extra 10-15 minutes to your total time. But don’t worry – the process is straightforward, and you’ll get faster at forming the meatballs with practice. I’ve found that setting up an assembly line system for stuffing and sealing the meatballs helps speed things up considerably.
Yield
One batch of these cheesy keto meatballs yields 8 generous-sized portions, making them perfect for family dinners or meal prep. You’ll find that each meatball is substantial enough to be satisfying on its own, thanks to the rich combination of ground beef and melted mozzarella center.
If you’re cooking for a larger group, you can easily double the recipe to make 16 meatballs. I’ve found that one meatball per person is usually enough when served with sides, but for hearty appetites, plan on two per serving. The nice thing about this yield is that you’ll likely have some leftovers if you’re cooking for a smaller household, which means you’ve got tomorrow’s lunch sorted with minimal extra effort.
Final Thoughts
Whether you’re new to keto cooking or an experienced low-carb chef, these air fryer meatballs are bound to become a staple in your weekly meal rotation. I love how versatile they are – you can serve them with zucchini noodles, on a bed of cauliflower rice, or simply enjoy them on their own. The melted cheese center adds that perfect touch of indulgence without breaking your carb count.
Don’t worry if your first batch isn’t perfect. It might take a few tries to master the art of sealing the cheese completely inside the meat, but even if some cheese escapes, they’ll still taste amazing. Remember, you can always make a double batch and freeze them for those busy weeknights when you need a quick, satisfying keto meal.
Frequently Asked Questions
Can I Use Other Types of Cheese Besides Mozzarella?
You can substitute mozzarella with cheddar, provolone, or any low-moisture cheese that melts well. Just make sure you cut it into small cubes and seal the meat tightly.
Will These Meatballs Freeze Well After Cooking?
You can freeze your cooked meatballs for up to 3 months in an airtight container. When you’re ready to eat, thaw them overnight and reheat in the air fryer.
How Do I Prevent the Meatballs From Sticking to the Basket?
Like a skilled chef’s secret weapon, you’ll want to lightly spray your air fryer basket with cooking oil or line it with parchment paper before adding your meatballs.
Can I Double the Recipe and Cook in Batches?
You can absolutely double the recipe and cook in batches. Just keep your first batch warm in a low-temperature oven while you’re preparing and cooking the remaining meatballs.
What’s the Best Way to Reheat These if Using Microwave?
Like waking a sleeping giant, you’ll want to microwave your meatballs at 50% power in 30-second intervals until they’re heated through, ensuring the cheese doesn’t burst from its meaty fortress.
Conclusion
You’ll find these cheese-stuffed meatballs are like little golden nuggets of joy from your air fryer. They’re perfect for meal prep, family dinners, or when you’re craving Italian without the carbs. The melted mozzarella center creates a flavor explosion that’ll keep you coming back for more. With simple ingredients and quick cooking time, these keto-friendly meatballs deliver restaurant-quality results right in your kitchen.