Prep Time : 10 minutes
Cook Time : aprox 4-6 hours depending on what your plans are.  
Yield : 6 servings

Ingredients:

40 frozen fully cooked meatballs
1 (26 ounce) jar pasta sauce
1 onion, chopped
6 slices muenster cheese or 6 slices provolone cheese
6 hoagie rolls, toasted

Directions:

Mix together frozen meatballs, sauce and onion in a crock pot.

Cover and cook on LOW 4-6 hours or until meatballs are heated through and onion is tender.

Place meatballs on rolls and top with cheese. Place under broiler for a minute or two to let cheese melt.

Nutrition:

Aprox. 399

My notes:  

My youngest came home from school one day and said, "mom, can we make turkey meatball sandwiches some night for dinner?"  I was shocked...this coming from the girl who doesn't really like sandwiches, so of course, I said yep.  She said the ones at school were better though lol so we are still trying to "perfect" it.

Found on: www.food.com