I just got my new Sun Oven and I'm using it today. I can't believe how quickly it heats up! One question I can't find an answer for on their web site though: Can you bake a pie in the oven and if so, what can you line the oven with to prevent spillover? Apple pie spillover has to be one of the hardest things to get off and I cwertainly don't want to have to use anything caustic on the oven surface. ALuminum foil won't work..how 'bout white parchment paper? I think it will reflect the light back and it won't heat properly. Any ideas from Sun Oven owners?