Here's a Hack from Domino's for Reheating Pizza in the Microwave Without Making It Soggy
You know if you reheat pizza in the microwave it'll get all soggy . . . but you also don't want to take the time to use the oven.
So what's a hungry, lazy person supposed to do?
Domino's in Australia just shared a "hack" for reheating pizza in the microwave so it doesn't become soggy: You just need to put a glass of water next to it in the microwave.
The water helps the base of the pizza stay crispy but lets the cheese melt.
Heat up a slice for 30 to 45 seconds, and you'll have leftover pizza that isn't soggy.
(The Sun)