Spinach Garlic Meatballs Stuffed with Mozzarella

I have a confession. I used to think meatballs were… well, boring. Just a lump of meat in some sauce. It wasn’t until I had one that was bursting with a surprise inside that everything changed.

That surprise was a molten pocket of mozzarella cheese. It was a game-changer. Suddenly, meatballs weren’t just a vehicle for sauce; they were the main event.

I took that idea and ran with it. I wanted something more than just cheese. I wanted flavor, some hidden goodness. That’s how these Spinach and Garlic Meatballs were born. They’re savory, packed with flavor, and have that incredible, gooey cheese pull that makes everyone at the table smile.

This isn’t just a recipe; it’s my secret weapon for turning a simple pasta night into something special. It’s comfort food, elevated. And it’s surprisingly easy to pull off.

What You’ll Need

Here are the simple ingredients that come together to create something truly delicious. Don’t be intimidated by the list; it’s mostly pantry staples.

  • 1 lb ground meat (I prefer a mix of beef and pork)
  • 1 cup fresh spinach, finely chopped
  • 3 cloves garlic, minced
  • 1/2 cup grated Parmesan cheese
  • 1/2 cup Italian breadcrumbs
  • 1 large egg, lightly beaten
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon dried oregano
  • 4 oz low-moisture mozzarella, cut into 1/2-inch cubes
  • 2 tablespoons olive oil
  • Your favorite marinara sauce (about 24 oz)

Pro Tips

I’ve made these meatballs more times than I can count. Along the way, I’ve picked up a few tricks that make a huge difference. Here are my top tips for getting them perfect on your first try.

  1. Squeeze That Spinach: Water is the enemy of a good meatball. If you’re using thawed frozen spinach or even fresh, you must squeeze out as much liquid as possible. I mean really squeeze it. This prevents the meatballs from becoming mushy and falling apart.
  2. Don’t Overmix: When you combine the meatball ingredients, mix them with your hands just until everything is incorporated. Overworking the meat develops the gluten and results in tough, rubbery meatballs. We’re aiming for tender and juicy.
  3. Freeze the Cheese: This is my favorite trick. Pop the mozzarella cubes in the freezer for about 15-20 minutes before you start forming the meatballs. This helps the cheese stay solid longer, so it melts inside the meatball instead of leaking out into your pan.
  4. Use a Scoop for Size: For meatballs that are all the same size (and cook evenly), use a medium cookie scoop. It portions out the meat perfectly every time, making the stuffing and rolling process much faster.

Tools Required

You don’t need any fancy gadgets for this recipe. Just your basic kitchen essentials will do the job.

  • Large mixing bowl
  • Large skillet or Dutch oven
  • Cutting board and knife
  • Small bowl (for the egg)
  • Measuring cups and spoons
  • Cookie scoop (optional, but recommended)
  • Baking sheet (if you choose to bake them)

Substitutions and Variations

This recipe is very forgiving. Feel free to play around with it based on what you have or what you like. Here are a few ideas to get you started.

IngredientSubstitution IdeaNote
Ground MeatGround turkey or chickenA lighter, leaner option.
BreadcrumbsCrushed pork rindsGreat for a keto/low-carb version.
MozzarellaProvolone or fontina cubesAdds a nuttier, sharper flavor.
SpinachFinely chopped kaleEnsure it’s chopped very small.

Make-Ahead Tips

You can easily prep these meatballs ahead of time to make dinner a breeze.

Assemble the meatballs completely but don’t cook them. Place them in a single layer on a baking sheet and freeze until solid. Once frozen, transfer them to a freezer-safe bag or container. They can be stored for up to 3 months. You can cook them directly from frozen; just add about 10-15 minutes to the simmering time.

How to Make Spinach Garlic Meatballs Stuffed with Mozzarella

Here’s the step-by-step guide to bring it all together. Just follow along, and you’ll have amazing meatballs in no time.

Step 1: If using frozen spinach, thaw it and squeeze out every last drop of water. If using fresh, chop it very finely. Place your mozzarella cubes in the freezer while you prep.

Step 2: In a large mixing bowl, combine the ground meat, squeezed spinach, minced garlic, Parmesan cheese, breadcrumbs, beaten egg, salt, pepper, and oregano.

Step 3: Gently mix the ingredients with your hands until they are just combined. Remember, don’t overwork the mixture.

Step 4: Take a scoop of the meat mixture (about 2 tablespoons) and flatten it in your palm. Place a frozen mozzarella cube in the center. Carefully form the meat around the cheese, rolling it into a smooth, sealed ball. Repeat with the remaining mixture.

Step 5: Heat the olive oil in a large skillet over medium-high heat. Carefully place the meatballs in the skillet, ensuring not to overcrowd the pan. You may need to do this in batches.

Step 6: Brown the meatballs on all sides, turning them gently. This should take about 5-7 minutes. They don’t need to be cooked through at this point; we’re just creating a nice crust.

Step 7: Pour your favorite marinara sauce over the browned meatballs in the skillet. Bring the sauce to a gentle simmer. Reduce the heat to low, cover the skillet, and let the meatballs cook in the sauce for 20-25 minutes, or until cooked through.

Nutritional Info & Diet Swaps

Knowing what’s in your food is important. Here’s a general idea of the nutritional value and how to adapt it for different diets.

(Note: Estimates are per meatball, without sauce, and can vary based on specific ingredients used.)

  • Calories: Approx. 90-110 kcal
  • Protein: Approx. 8g
  • Fat: Approx. 6g
  • Carbohydrates: Approx. 2g

For specific dietary needs, a few simple swaps can make this recipe work for you.

Dietary NeedEasy Ingredient Swap
Gluten-FreeUse certified gluten-free breadcrumbs.
Keto / Low-CarbReplace breadcrumbs with crushed pork rinds or almond flour.
Dairy-FreeUse dairy-free mozzarella and parmesan alternatives.

Meal Pairing & Efficiency

These meatballs are fantastic on their own, but they also pair beautifully with other dishes. Here are a few ways to serve them:

  • Classic Spaghetti: Serve them over a bed of your favorite pasta.
  • Meatball Sub: Pile them into a toasted hoagie roll and top with more cheese.
  • Zucchini Noodles: A great low-carb alternative to pasta.
  • Creamy Polenta: The ultimate comfort food pairing.

To make cooking faster, use a food processor to quickly mince the garlic and chop the spinach. Making a double batch and freezing half is a smart move for a quick future meal.

Leftovers and Storage

If you have any leftovers, they store beautifully. Let the meatballs and sauce cool completely.

Store them in an airtight container in the refrigerator for up to 4 days. To reheat, gently warm them in a saucepan over low heat until heated through. You can also microwave them, but the stovetop method preserves their texture best.

Frequently Asked Questions

Here are answers to a few common questions that might pop up.

Q1. Why did my meatballs fall apart?
Ans: This usually happens for two reasons. The spinach might have been too wet, or the mixture needed a little more binder. Next time, make sure to squeeze the spinach very dry and ensure your egg is well-incorporated.

Q2. Can I bake the meatballs instead of pan-frying?
Ans: Absolutely. Place the formed meatballs on a baking sheet lined with parchment paper. Bake at 400°F (200°C) for 15 minutes, then add them to the simmering sauce to finish cooking for another 15-20 minutes.

Q3. All the cheese leaked out! What went wrong?
Ans: This is a frustrating one! The most common cause is the meatball not being sealed properly around the cheese cube. Make sure there are no gaps. Also, freezing the cheese beforehand really helps prevent this.

Wrapping Up

There you have it—a simple way to transform the humble meatball into something a little bit magical. That moment when someone cuts one open and sees the melted cheese is always worth it.

I truly hope you give this recipe a try. It’s a favorite in my home, and I think it will be in yours too. It’s perfect for a cozy weeknight dinner or for impressing guests without a lot of stress.

If you make these, I would love to hear about it! Leave a comment below and let me know how they turned out, or if you have any questions. 

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