What baking sheets will not warp?
Seek out aluminum baking sheets with rolled edges to prevent warping. Skip the nonstick surface and instead simply line the pan with parchment paper, or a silicone baking mat if you’re cooking something delicate.
When should I replace my baking sheets?
Any major dents or cracks in the pan are signs that you should replace your baking sheet. The dents and cracks cause uneven cooking with your food, making it frustrating to prevent undercooking or overcooking.
Can I fix a warped pan?
A warped pan doesn’t sit snugly on the stove burner; it wobbles around and conducts heat poorly. You can repair it by tapping the bulge back into place. … For an expensive pan, it may make more sense to take advantage of the warranty and return it to the manufacturer rather than trying to repair it yourself.
An air-bake cookie sheet is supposed to eliminate the problem with burnt cookie bottoms, allowing the cookies to cook evenly. Air bake sheets are constructed with two aluminum layers with an air cushion between them. The reason for such a design is to prevent the top sheet from overheating.