This is very helpful. As I began reading, my thought was, "Oh, no! I need new baking sheets!" Of course, by the end, I know how to correct my baking times, until next Christmas when I'll ask Santa for new pans. ;) Naturally, there's yet another question: what about silicon (Sil-pat) sheets? Guess I'll be doing some experimenting today. Thank you so much! Starr--I commented on a previous comment about Sil-Pats: they do not promote browning as well as parchment paper, but you can certainly use them for baking cookies. It's hard balance as you don't want to over-bake the cookies but you want color on the bottom: you may have to tweak the timing OR place the sheet lower in the oven if the heat source is in the bottom. Best, Kim@KAF

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