How do you freeze pumpkin pie?

[wiredpsyche]

I make pumpkin pie fairly regularly, well, at least when I get to it. I want to start OAWC or even OAMC, so I'm wondering: How do you freeze pumpkin pie? I'd love to be able to make a huge batch of these to have to pop in the oven whenever would be good for me.

Edit: Oh, and how do I cook the pie once frozen? Do I thaw it first? Cook longer?