In an 8x11-inch baking dish, lay out the bottom of the 15 slider buns.
Brush with garlic olive oil (or a mixture of garlic and oil or melted butter) and place under broiler, about 6" from heat) until toasted. Watch carefully as they can brown quickly. (Don't pass up this step as it keeps the buns from getting too soggy with the tomato sauce.)
Remove from oven. Turn oven to bake and set at 350 degrees.
Place a meatball, that's been warmed (per package directions), on each bun.
Top with pasta sauce, then sprinkle on mozzarella cheese and a little Parmesan cheese. Top with a few basil leaves.
Place remaining halves of buns on top. Brush again with garlic-infused oil and sprinkle additional Parmesan cheese on top.
Place back in oven and cook for 5 minutes or until all is toasty and cheese is melted.
Remove, cut into individual rolls and serve on a platter.
Notes
VARIATIONS
Meat - try subbing in turkey or chicken meatballs or plant-based meatballs
Rolls - opt for dinner rolls, potato rolls or even brioche rolls in lieu of Hawaiian rolls
Sliders with a twist - use garlic bread or Texas Toast in lieu of rolls
Flavor - change to a filling from your favorite food list like Cheeseburger Sliders, Chicken Parmesan Sliders, BBQ Pork, or even Taco Sliders