Baking sheets and cookie sheets are both used interchangeably. They are both rectangular pans, and they serve a similar purpose. Yet, you should take note of their difference. Cookie sheets either have one raised edge or none at all to allow cookies to slide off easily. On the other hand, baking sheets have four one-inch raised edges which allow other food processes to be made, such as roasting. One thing is for sure, though, you can use cooking sheets and baking sheets for baking cookies and other delicious treats and goodies.