Meatball-Stuffed Garlic Bread SlidersAdvertisementsAdvertisements Start Cooking (35 reviews)Prep:25 minsCook:40 minsTotal:1 hr 10 mins Ingredients 2 tablespoons olive oil, divided1 yellow onion, diced5 cloves garlic, minced, divided1 pound ground beef2 tablespoons chopped Italian parsley, plus more for garnish1 large egg¼ cup plain bread crumbs1 cup shredded fontina cheese, divided2 teaspoons kosher saltfreshly ground black pepper to taste1 pinch cayenne pepper, or to taste3 tablespoons unsalted butter18 dinner rolls2 cups spicy tomato sauce2 tablespoons freshly grated Parmigiano-Reggiano cheeseAdvertisements Start Cooking