Leftover pizza
Pizza should never be reheated in the microwave, even though it might be the simplest method. Your slice will invariably have a crust that is almost inedible, and cheese that is more soggy than melty and gooey. The pan and oven are two better options for reviving your slice, but the toaster will also work if you chance to have some toaster bags on hand.
Delish claims that all you need to do to prepare leftover pizza is toss a slice into the toaster. Your slice will be restored to its molten splendor and taste almost as fresh as the time you ordered it if you use a low-medium setting. Of course, some designs and slice sizes fit in toaster bags better than others. Any sort of pizza will work as long as you're ready to cut and rearrange it a little bit, but square options like Sicilian and Detroit are best.