The best and easiest way to reheat a quiche is to put it in an oven that has been preheated to 160C (325F) for 15-minutes.
The fastest way to reheat a quiche is to do it in a microwave. Reheating a quiche in a microwave is also probably the worst way to reheat a quiche. It can turn the quiche to mush as quickly as it heats it.
We picked up a discount quiche from our local “The Cheesecake Shop” for only $10.00. It’s a big one, so we should be able to get two meals out of it. We’ll add a salad and some bake at home bread roles (also discounted) for a good balanced dinner.