Combine melted butter, minced garlic, Parmesan cheese, and chopped parsley in a small bowl and mix until fully incorporated.

Preheat oven to 375 degrees Fahrenheit.

Put frozen meatballs on a foil-lined baking pan or dish, place on rack in center of oven, and bake for about 10 minutes. They will finish heating in garlic bread steps.

Cut a small hole in the center of each dinner roll and remove just enough bread to make room for a meatball.

Spread garlic butter over and inside the hole of each roll.

Place one par-heated meatball in each roll and top rolls with marinara sauce, mozzarella, and Parmesan.

Bake at 375 degrees Fahrenheit for about 10-15 minutes, or until cheese is melted and bubbly, rolls are toasted, and meatballs’ internal temperature reaches 140 degrees Fahrenheit, as per a meat thermometer.

Remove from oven, let cool for a few minutes, and enjoy!