So a friend I have a few wam fights with has requested we use pies like apple and cherry in our next session. Has anyone every used such pies before and if yes, how should we prepare them ie should we bake them the night before or can we just defrost them if they are the frozen type?

You could also get ready made, room temp, pies at the local grocery market too.

I definitely don't recommend frozen though, you may was well WAM with cinder blocks.

By frozen I meant buying them frozen and letting them defrost over night.

I've used pie filling under whipped cream / frosting/ cream cheese or pudding toppings. Never used whole pie crusts but maybe buy crumble toppings. I've used pieces of pie to smear.