The best way to reheat vegan pizza is a long-contested and highly debated topic, with many people having their own personal favorites. Here are some of the most popular and effective ways to reheat your vegan pizza: Frying pan: on medium heat add your leftover vegan pizza and a bit of water and cover with a lid. The steam will heat the top and the frying pan will keep the bottom crispy.  Oven/Toaster-Oven: Baking the leftover vegan pizza at 350 degrees for a couple of minutes will ensure that it remains crisp and doesn't get soggy.  Air Fryer: This may come as a surprise to some people but when I asked this question on Twitter Air Fryer was the most popular response! Place in the air fryer basket at 390 degrees for a few minutes for best results! Cold: This one goes without saying but cold leftover pizza is delicious especially when you're hungover