Prepare the rolls: Cut small, deep circles into the center of each Hawaiian roll without cutting through to the bottom. Use your fingers or the bottom of a small glass to push down the center and create a larger space.
Make the garlic butter: Melt butter and add remaining ingredients.
Spoon the garlic butter: Spoon the garlic butter on top and inside of the rolls.
Bake: Bake the rolls in the preheated oven for about 6 minutes, or until lightly toasted.
Fill the rolls: Add a small amount of tomato sauce to the center of each roll. Place a small piece of mozzarella cheese in each roll, followed by a cooked meatball. Add another slice of cheese. Sprinkle with Parmesan cheese.
Bake again: Bake for another 6-7 minutes, or until the cheese is melted and bubbly.(checking frequently)
Serve: Let the sliders cool slightly before garnishing with parsley and serving.
Notes
Tips:
For a quicker meal, use pre-cooked meatballs and jarred tomato sauce.
You can customize these sliders with your favorite toppings, such as mushrooms, onions, or peppers.
Serve with your favorite dipping sauce, such as marinara or ranch.