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These meatball sliders are cheesy, saucy, and baked together in one pan, so they’re easy to serve to a crowd. Homemade meatballs with mozzarella tucked inside get layered on soft slider buns with marinara and a garlic butter top. They’re great for game day or an easy family dinner.
More Baked Pull-Apart Sliders: Chicken Parmesan Sliders | Hot Italian Sliders | Sloppy Joe Sliders
Before You Get Started
Meatball sliders are simple, but a few small choices decide whether they come out tender and saucy or dense and soggy.
- Spoon sauce over the meatballs — Sauce poured on the bottom buns soaks straight into the bread. Keep it on the meatballs, and serve the rest warm for dipping.
- Mix the meatballs gently — Stir just until everything comes together. Overmixing packs the meat tight, and the meatballs bake up dense and tough.
- Cut the meatballs in half — Halves sit flat on the buns, so the tops close evenly and every slider gets the same amount of filling.
Best Sauce and Buns
These two choices make a big difference in how well your sliders hold up.
Go for a thick marinara: Thin sauce slides off the meatballs and soaks into the bread. If your jar looks watery, let it simmer for a few minutes first.
Spaghetti sauce or Homemade Marinara Sauce works too.
Use plain connected slider buns: They’re soft but sturdy enough to hold the sauce, and they keep the focus on the meatballs. Hawaiian rolls are great if you love sweet and savory together. I just find them a little too sweet with marinara.
RECIPE OVERVIEW
How to Make Meatball Sliders
See the recipe card below for full, detailed instructions
The meatballs bake first on their own pan. Then everything gets layered on the buns and baked together until the cheese melts and the tops turn golden.
1. Sauté the Onion
Cook the chopped onion in a little olive oil for 2 to 3 minutes, until it’s soft and starting to brown.
Let it cool for a few minutes before adding it to the meat. Raw onion stays crunchy in the meatballs, and hot onion starts cooking the beef while you mix.
2. Mix and Shape the Meatballs
Add the ground beef, cooled onion, cubed mozzarella, panko, garlic salt, and oregano to a large bowl. Mix it gently with your hands or a wooden spoon, then add the beaten egg and mix just until it’s worked in.
Scoop the mixture into 16 meatballs, about 2½ ounces each, and pack them lightly. A kitchen scale makes it easy to get them the same size so they cook evenly.
Want a different meatball? My Italian Sausage Meatballs add more seasoning and a little spice, and my Mozzarella Stuffed Meatballs hide a whole cube of cheese in the center.
3. Bake the Meatballs
Bake the meatballs for about 15-20 minutes, until they’re browned and reach 160°F in the center. A few of the mozzarella cubes may melt out onto the pan. That’s normal, and there’s plenty of cheese still inside.
While the meatballs bake, warm the marinara in a small saucepan.
4. Layer the Sliders
Slice the whole sheet of buns in half horizontally without pulling the rolls apart. Set the bottom half on a parchment-lined baking sheet.
You can keep the meatballs whole or cut each meatball in half and set two halves, cut side down, on each bun. Spoon about a cup of the warm marinara over the meatballs, then sprinkle the shredded mozzarella over the top.
5. Brush and Bake
Set the top half of the buns in place. Stir the melted butter with the garlic powder and oregano, brush it over the tops, and sprinkle on the Parmesan.
Cover the pan loosely with foil and bake for 10 minutes so the cheese melts without the tops browning too fast. Uncover and bake 5 to 8 minutes more, until the tops are golden. Sprinkle with parsley or basil, cut them apart, and serve with the rest of the marinara for dipping.
Shortcut: Using Frozen Meatballs
Frozen meatballs turn this into a quick dinner with almost no prep. Use about 32 small, fully cooked Italian-style meatballs (about 1 ounce each), so you can set two whole meatballs on each bun.
Bake them according to the package until they’re heated through to 165°F, usually 20 to 25 minutes at 350°F. Then skip the halving and layer them on the buns with the sauce, cheese, and garlic butter just like the homemade version.
Looking for more slider recipes? My Easy Baked Sliders collection has plenty more pull-apart pans, from garlic butter ham and cheese to roast beef and chicken bacon ranch.
Ways to Change It Up
- Make them one at a time: For a smaller batch or a quick dinner, skip the pan. Split the buns, brush the cut sides with a little butter, and toast them under the broiler. Top each bun with a cheesy meatball and a spoonful of sauce and serve them open-face, or warm the buns in foil and build them like regular sliders.
- Try turkey or chicken: The same build works with lighter meatballs. Use the turkey meatballs from my Turkey Meatball Subs or Baked Chicken Meatballs, then layer and bake as directed.
- Add some heat: Stir a pinch of red pepper flakes into the marinara, or tuck a few pickled banana peppers under the cheese.
What to Serve Alongside
Meatball sliders are rich, cheesy, and saucy, so they’re best with something crisp or tangy on the side. Since the sliders need the oven, pick sides you can make ahead, toss together, or cook in the air fryer.
For an easy dinner:
For game day or a party:
Storage Tips
Storage, Make-Ahead, and Reheating
Make the meatballs ahead: Bake the meatballs up to 2 days early, let them cool, and refrigerate them in an airtight container. When you’re ready, layer them on the buns cold and add about 5 minutes to the covered bake.
Freeze the meatballs, not the sliders: Baked meatballs freeze well for up to 3 months. Assembled sliders don’t freeze well because the buns turn soggy as they thaw.
Leftovers: Keep leftover sliders covered in the refrigerator for up to 3 days.
Reheat in the oven: Cover them with foil and warm at 350°F for 10 to 15 minutes, until heated through. The microwave works for one or two, but the buns get soft and chewy.
Frequently Asked Questions
How do I keep meatball sliders from getting soggy?
Keep the sauce on the meatballs and off the bread. Spoon it over the meatballs, use a thick marinara, and serve extra sauce on the side instead of adding more to the pan. Bake them close to serving time, too. The longer they sit with sauce on them, the softer the bottom buns get.
Why is the cheese leaking out of my meatballs?
Mozzarella cubes near the surface melt out as the meatballs bake. Cutting the cheese into small ¼-inch pieces and mixing them evenly through the meat helps keep most of it inside. A little cheese on the pan is fine. If you want the cheese sealed in completely, tuck a single cube into the center of each meatball instead.
How many meatball sliders should I make per person?
For a party with other appetizers, plan on 2 to 3 sliders per person. If they’re the main dish, 3 to 4 per adult is a good amount, and kids usually eat 2. For a bigger crowd, make two pans. Bake them on separate racks and swap their positions halfway through so they brown evenly.
Why are my slider tops browning before the cheese melts?
That usually means the pan went in uncovered or the oven runs hot. Covering the pan with foil for the first 10 minutes lets the cheese melt and the filling heat through without burning the garlic butter. Uncover only at the end to brown the tops. If they’re still getting dark, move the pan to a lower rack.
More Meatball and Slider Favorites
- Easy Homemade Meatballs
- Ham and Cheese Sliders
- Meatball Marinara Poppers
- Baked Club Sliders
- One Pan Spaghetti and Meatballs
- Hot Italian Sub Sandwiches
Meatball Sliders
Ingredients
For the meatballs
- 1 teaspoon olive oil
- 2 tablespoons finely chopped white onion
- 2 pounds 85/15 ground beef
- 4 ounces mozzarella cheese cut into ¼-inch cubes
- ⅔ cup panko breadcrumbs
- 1 teaspoon garlic salt
- 1 tablespoon dried oregano
- 1 large egg beaten
For the sliders
- 1 (24-ounce) jar marinara sauce, divided
- 16 connected slider buns
- 3 ounces mozzarella cheese freshly shredded (about ¾ cup)
For the garlic butter
- 3 tablespoons unsalted butter melted
- ½ teaspoon garlic powder
- ½ teaspoon dried oregano
- 2 tablespoons grated Parmesan cheese
- Fresh parsley or basil minced, for garnish (optional)
Instructions
- Sauté the onion: Heat the olive oil in a small skillet over medium-high heat. Add the onion and cook 2 to 3 minutes, until soft and starting to brown. Set aside to cool for a few minutes.
- Preheat the oven: Heat the oven to 350°F. Line a large rimmed baking sheet with foil.
- Mix the meatballs: In a large bowl, combine the ground beef, cooled onion, cubed mozzarella, panko, garlic salt, and oregano. Mix gently, then add the egg and mix just until combined.
- Shape the meatballs: Scoop into 16 meatballs, about 2½ ounces each, and pack lightly. Place them 1 inch apart on the prepared pan.
- Bake the meatballs: Bake 15 minutes, until browned and 160°F in the center. Meanwhile, warm the marinara in a small saucepan over medium-low heat. Leave the oven on.
- Prep the buns: Without separating the rolls, slice the buns in half horizontally. Place the bottom half on a parchment-lined rimmed baking sheet.
- Layer the sliders: Cut each meatball in half and place two halves, cut side down, on each bun. Spoon about 1 cup of the warm marinara over the meatballs, then sprinkle with the shredded mozzarella.
- Brush the tops: Place the top half of the buns over the filling. Stir together the melted butter, garlic powder, and oregano. Brush over the tops and sprinkle with Parmesan.
- Bake the sliders: Cover loosely with foil and bake 10 minutes. Uncover and bake 5 to 8 minutes more, until the tops are golden and the cheese is melted.
- Serve: Sprinkle with parsley or basil. Cut the sliders apart and serve with the remaining marinara for dipping.
Notes
- Ground beef: 85/15 keeps the meatballs juicy. Lean ground beef works too, but the meatballs will be a little drier.
- Shred your own cheese: Pre-shredded mozzarella has coatings that keep it from melting smoothly. Shredding a block gives you a creamier melt and more cheese for the price.
- Even meatballs: Use a kitchen scale to weigh each meatball to about 2½ ounces so they all cook at the same rate.
- Frozen meatball shortcut: Use about 32 small (1-ounce) fully cooked frozen meatballs. Bake them according to the package until 165°F, usually 20 to 25 minutes at 350°F. Place two whole meatballs on each bun and continue with step 6.
- Buns: Most slider buns come in packs of 12, so you’ll need two packs. Hawaiian rolls work but make the sliders sweeter.
- Make ahead: Bake the meatballs up to 2 days ahead and refrigerate. Add about 5 minutes to the covered bake if they go on the buns cold. Baked meatballs freeze for up to 3 months.
- Storage: Refrigerate leftovers, covered, for up to 3 days. Reheat covered at 350°F for 10 to 15 minutes.
Nutrition
Nutritional Disclaimer Kristin Maxwell of “Yellow Bliss Road” is not a dietician or nutritionist, and any nutritional information shared is an estimate. For accurate calorie counts and other nutritional values, we recommend running the ingredients through your preferred online nutritional calculator. Calories and other nutritional values can vary depending on which brands were used.
