Super durable, lighter than cast iron and oh, that gorgeous unexpected slate blue. Ideal for new homeowners or couples starting out, our exclusive cookie sheet takes its cue from professional kitchens. Made of carbon steel—an alloy of 99% iron and 1% carbon that's nearly indestructible—the pan heats quickly and maintains consistent temperatures for perfectly baked foods. Reinforced rims prevent warping, while two flat sides allow baked cookies to slide off effortlessly. A double layer of silicone-based nonstick coating ensures easy release and quick cleanup.