Leftover pizza is never quite as good as fresh, but it can still be enjoyable if you put a little effort into it. Try these easy instructions from Eat More Better.
The problem with reheating pizza in an oven is that if you put foil or a baking sheet beneath it, the bottom crust never regains its crisp. If you put it straight on the rack, cheese oozes all over your oven and the crust gets burnt. Here’s an approach that achieves better results on all fronts:
Heat a nonstick pan on medium heat. Place pizza in the pan, cheese-side down. Press down gently with a spatula to make sure all the cheese touches the pan. When oil starts to accumulate on the edges and all the cheese is hot, flip the slice and cook until bottom crust is crispy.