Easy Meatball Slider Subs Cook frozen meatballs according to bag instructions, add marinara sauce Take your Kings Hawaiian rolls, separate them into threes. Scoop the center out of the rolls as shown in the video. Melt butter with garlic powder and some Italian seasoning and brush overtop. Bake these at 350 degrees for 5 minutes After initial 5 minutes, add on your meatballs and top with shredded mozzarella. Bake again at 350 for 15-20 minutes. #recipe #richardeats | Richard Eats