These baked meatball sliders stack homemade meatballs, saucy spaghetti, and melty mozzarella on buttery Hawaiian rolls for the ultimate handheld party food.
Preheat the oven to 375°F. Spray a 9×13 baking dish with cooking spray and set aside. Line a sheet tray with parchment paper.
In a large bowl, mix together the ground beef, bread crumbs, parmesan, egg, onion soup mix, garlic powder, oregano, and pepper until well combined, do not overmix. I like to use my hands for this step.
Divide the mixture into 12 portions and roll into balls. Place on the prepared sheet tray, not touching.
Bake the meatballs for 10-15 minutes until an internal temperature reaches 165°F.
While the meatballs are baking, make the spaghetti. Place the cooked noodles into a large bowl with the marinara sauce and parmesan cheese, stir to combine.
8 ounces spaghetti noodles, 1 cup jarred marinara sauce, 1/4 cup grated parmesan cheese
Slice the rolls in half lengthwise. Place the bottom, cut side up into the prepared baking dish.
12 Hawaiian rolls
Add the spaghetti on top of the rolls.
Place one meatball onto each slider.
Add the mozzarella on top of the meatballs.
2 cups shredded mozzarella cheese
Top with the top of the rolls.
In a small bowl, stir together the butter, Italian seasoning, garlic powder, and onion powder. Brush this all over the tops of the rolls, use it all!
1/2 cup salted butter, 1/2 teaspoon dried Italian seasoning, 1/2 teaspoon garlic powder, 1/2 teaspoon onion powder
Cover with nonstick foil or spray a large piece of foil with nonstick spray and cover the sliders, make sure the oil doesnt touch the tops.
Bake for 20 minutes, remove the foil, and bake for an additional 4-5 minutes or until the tops of the rolls are browned.
Allow to cool for 10 minutes, then slice and serve.
Notes
Use a pastry brush to evenly apply the garlic butter mixture.
Bake the sliders in a preheated oven on the center rack for the best results.
Use an ice cream scoop for evenly sized meatballs.
Make sure to not overcook the meatballs; juicy meatballs are the best meatballs.
Let the sliders rest for 5-10 minutes after baking for the cheese to set slightly before serving.