X-Chef Silicone Baking Mats Sets of 3 | $13 | Amazon | Use code KDUGM4K2
Image: Amazon
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You won’t have to deal with messy cooking spray or scrubbing your cookie sheets when you use these silicone baking mats. They essentially provide a nonstick, easy-to-clean layer between your food and your cookie sheet.

A three pack is just $13 (with code KDUGM4K2), and these will keep you cookie sheets looking new for a very long time.