Designed to cook delicious cookies, the Insulated Cookie Sheet features an interior layer of air to help protect baked goods from overbrowning. Calphalon Nonstick Bake ware has interlocking nonstick layers to deliver high performance release. In fact, it releases up to 2 times better than Calphalon Classic Bake ware. Now, even the stickiest baked goods can be removed cleanly for beautiful results and easy cleanup.