Meatball Sub.
 	 	
 	 	 	You can have Meatball Sub using 5 ingredients and 4 steps. Here is how you cook that. 
Ingredients of Meatball Sub
- Prepare 1 Package of Sub Rolls.
 - It's of Provolone cheese.
 - You need of Shredded mozzarella cheese.
 - Prepare of Left over meat balls.
 - Prepare of Left over spaghetti sauce.
 
Meatball Sub step by step
- Warm the sauce and meat balls on the stove in a small pot on medium heat..
 - Preheat oven to 350 degrees..
 - Cut the sub rolls in half lengthwise, and remove some of the bread from the inside to make a well for the meatballs. Brush with olive oil, and season with garlic powder and salt. Slip the sub rolls into the oven for 5 minutes, or until lightly toasted..
 - Spoon the meat sauce and the meatballs into the subs and top with slices of provolone cheese and shredded mozzarella cheese. Return to the oven for 2 to 3 minutes to melt the cheese. Cool slightly, cut into servings, and enjoy!.
 
