Hi, Wendy! We have a great explanation about how to figure out the ratios for different pan sizes here: The essential alternative baking pan sizes. There's no real formula for extending or reducing baking times, but they'll of course be shorter in a smaller pan and longer in a larger one. For best results, keep a close eye on your baked goods the first time you make them, then take good notes so that you have the timing nailed down for future bakes. Happy baking!

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