SP made sauce on a recent Sunday, but we didn't feel like making homemade meatballs. Our storebrand frozen meatballs actually have ingredients you can pronounce, so I bought a few bags. We ate the leftover sauce and meatballs as sandwiches:
I toasted the hoagie rolls before laying down some shredded Mexican cheese (we had a little to use up), sauce and meatballs. On top of the meatballs I put provolone, American and mozzarella cheeses:
... before baking them to melt the cheese. These tasted exactly like the sandwich I order from our favorite pizza place.