Ingredients
Equipment
Method
Make the meatballs
- Heat the oven to 400°F.
- Line a rimmed baking sheet with parchment paper.
- Gently mix the ground beef, breadcrumbs, egg, milk, Parmesan, garlic, Italian seasoning, salt, and pepper in a large bowl until just combined.
- Shape the mixture into 12 meatballs and place them on the baking sheet.
- Bake for 15–18 minutes, until the centers reach 160°F on an instant-read thermometer.
Assemble and bake the sliders
- Reduce the oven temperature to 350°F.
- Grease a 9x13-inch baking dish.
- Slice the rolls horizontally as one slab and place the bottom half in the dish.
- Warm the marinara in a 2-quart saucepan over medium-low heat.
- Add the meatballs and simmer for 3–5 minutes, turning them gently to coat.
- Arrange the meatballs over the roll bottoms and spoon the remaining sauce evenly over them.
- Sprinkle with mozzarella and place the roll tops over the cheese.
- Stir the melted butter and garlic powder together.
- Brush the butter mixture over the roll tops.
- Cover loosely with foil and bake for 10 minutes.
- Uncover and bake for 5–8 minutes, until the cheese is melted and the tops are lightly golden.
- Let the sliders rest for 5 minutes before separating and serving.
Notes
For tender meatballs, mix just until combined. Refrigerate leftovers in an airtight container for up to 3 days; freezing is not recommended after assembly because the rolls can become soggy. For a gluten-free swap, use gluten-free breadcrumbs and rolls.
