This is a really helpful post. I often reuse my parchment paper but especially during those heavy cookie baking times. I use the parchment paper to bake a batch and then brush off the crumbs, roll the paper up, and store it in the fridge in a zip top bag. That way the traces of butter that may be left on the paper don't spoil. Then the next day, or the next time I am baking cookies, I pull my parchment from the fridge and use it again. It also saves time since I have already cut the parchment into sheets to fit my cookie pans. After a two or three batches of cookies I dispose of the parchment.

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