You can microwave a pie to reheat the pie.
However if you're baking or cooking the pie then microwaving the pie is not the best thing to do as it does not cook or bake the pie properly.
It's best to bake the pie in a regular oven for the pie to turn out like it should.
However if you do have a pie that you need to reheat or heat up then removing the pie from the pie pan and then placing the pie on a microwave safe dish or plate can make it okay to microwave the pie.
I will remove a pie from the fridge and then place a few slices of pie on a microwave safe plate and then heat up a few slices of pie.
It should only take 1 to 2 minutes to microwave the pie to heat it up.
Cooking a pie in a microwave is not a good idea but heating up a pie is okay and works well.