
Melty mozzarella stuffed inside tender beef meatballs simmering in a fragrant marinara sauce is pure Italian-inspired comfort. These meatballs make pasta night feel extra special with their gooey cheese centers and bold savory flavor. This is my go-to when I want something hearty and crowd-pleasing, whether for Sunday dinner or an easy make-ahead meal.
The first time I served these, my family actually cheered when they cut a meatball open and found that bubbly cheese inside. Now we make double batches so there is always a stash for busy weeknights.
Ingredients
- Ground beef: Rich flavor and tender bite makes these meatballs super satisfying Try to choose beef with about 85 percent lean for best balance of flavor and moistness
- Large egg: Helps everything bind together for meatballs that hold shape without falling apart Use fresh eggs for best results
- Small onion: Finely diced for extra sweetness and depth Pick onions that feel heavy and have tight papery skins
- Garlic cloves: Minced for rich aroma and punch Fresh garlic gives the most balanced kick
- Fresh parsley: Bright color and fresh flavor Chop right before using so it stays vibrant
- Panko breadcrumbs: These keep the meatballs light and juicy Use unseasoned panko for best texture
- Parmesan cheese: Adds that signature salty nutty note Finely grated works best so it incorporates easily
- Dried basil and dried oregano: Essential Italian herbs for a classic taste Check your spices are fragrant and not faded
- Salt and freshly ground black pepper: Brings everything into balance Taste and adjust pepper for heat
- Fresh mozzarella cheese: Creamy cheese pulls for dramatic effect Use good quality mozzarella for the best melt and flavor
- Olive oil: For browning and extra richness Choose a fruity extra virgin olive oil if you have one
- Marinara sauce: Deep flavor bath for the meatballs Use your favorite jarred or homemade sauce with bright tomato and herb notes
- Fresh parsley and grated parmesan cheese: To finish and garnish for freshness and a final cheesy touch Use fresh and finely grated for best results
Step-by-Step Instructions
- Make the Meatball Mixture:
- Combine the ground beef egg finely diced onion minced garlic parsley breadcrumbs parmesan basil oregano salt and pepper in a large bowl Use your hands to thoroughly mix until everything feels evenly distributed and cohesive Avoid overmixing so the meatballs stay tender
- Cut the Cheese:
- Slice mozzarella into twelve half inch cubes This size makes sure every meatball gets a generous gooey center Keep cheese refrigerated until ready to use so it is easy to handle
- Shape and Stuff the Meatballs:
- Scoop roughly two tablespoons of meat mixture and press it gently into your palm Make a little well in the center Tuck a mozzarella cube inside then gently fold the meat around the cheese Completely seal the edges and roll into a ball Repeat until you have twelve stuffed meatballs
- Brown the Meatballs:
- Heat olive oil in a large nonstick skillet over medium high Once the oil shimmers arrange meatballs in a single layer without crowding Sear for about two to three minutes until richly browned then carefully turn and repeat on the other side Work in batches if your pan is small to keep browning even
- Simmer in Marinara Sauce:
- Pour marinara sauce over browned meatballs in the pan Reduce the heat so the sauce simmers gently Cover and cook for ten minutes turning meatballs halfway so they get an even cook The sauce will bubble and thicken while the cheese melts in the center
- Test and Serve:
- Cut one meatball open to make sure the center is fully cooked and the cheese is melted The middle should not be pink and a thermometer should read at least one hundred sixty degrees Fahrenheit Serve meatballs and sauce over steaming pasta with extra parsley and parmesan for that classic Italian table vibe

My favorite part is the reveal of molten cheese when you cut into a meatball It reminds me of cozy winter nights with my sister as we tried to see who got the longest cheese pull
Storage Tips
Cool leftovers completely before storing Transfer to an airtight container and refrigerate for up to three days For longer storage freeze meatballs with or without sauce in a freezer safe bag and use within two months Thaw in the fridge overnight and reheat gently on the stovetop or in the microwave with extra sauce to keep them juicy
Ingredient Substitutions
You can swap ground turkey or chicken for the beef if you like a lighter version Instead of mozzarella try fontina or provolone for a different cheesy twist Gluten free breadcrumbs make these celiac friendly and still hold the meatballs together nicely

Serving Suggestions
These meatballs are a showstopper over al dente spaghetti or ziti For meatball subs use fresh sub rolls and an extra spoonful of marinara sauce with melty cheese A side Caesar salad or garlic bread makes it a complete feast Kid friendly and impressive enough for guests
Cultural Context
Stuffed meatballs are found in many Italian American kitchens but they have roots in Sicilian and southern Italian cooking where cheese or egg often fill the centers This tradition traveled with immigrants who adapted recipes for their families Here it is an iconic comfort food that brings a sense of joy and occasion to the table
Frequently Asked Questions
- → How do I keep the mozzarella from leaking out during cooking?
Thoroughly seal each meatball around the mozzarella ensuring there are no cracks to prevent cheese from escaping.
- → Can I use a different cheese in the center?
Yes! Try provolone or fontina for a similar melt; just use firm cheeses that won't ooze excessively when hot.
- → What's the best way to serve these meatballs?
They’re delicious over pasta, but also great in sub rolls or with a side of crusty bread to soak up the sauce.
- → How can I store and reheat leftovers?
Refrigerate in an airtight container for up to three days, or freeze. Reheat gently in sauce until warmed through.
- → Can these meatballs be made ahead?
Yes, shape the meatballs in advance and refrigerate. Cook when ready to serve for the freshest result.
- → What should the internal temperature of the meatballs be?
Ensure the center of each meatball reaches 160°F for food safety and perfectly cooked results.