When reheating a sub, the goal is to heat it evenly throughout without drying it out. There are a few ways to do this:
-If using an oven, preheat to 350 degrees Fahrenheit. Wrap the sub in foil, place on a baking sheet and heat for 10-15 minutes.
-If using a microwave, wrap the sub in damp paper towels and heat on medium power for 1-2 minutes. Then, let it sit for 1 minute before eating.
-If you have time, reheat the sub by slicing it in half and pan frying each side over medium heat until warmed through. This will help to preserve some of the crispness of the bread.