Meatball Sub

Okay...not really a recipe, just putting it on here for a dinner idea more than anything!

Frozen precooked meatballs
Sub rolls
sliced cheese (provolone is my favorite)
butter
garlic powder
jar of marinara sauce (your favorite)

Cook meatballs with marinara sauce per package directions.  Spread thin layer of butter on each side of sub roll and sprinkle with garlic powder.  Place meatballs on rolls and cover with cheese.  Place in broiler for 1-2 minutes (or until cheese gets slightly browned and bubbly