A jelly roll pan is a shallow baking pan with raised edges, typically measuring about 15x10 inches. It is designed for baking thin cakes, such as jelly rolls, which are rolled up with filling after baking. The pan's size and shape allow for even cooking and easy removal of baked goods. These pans are often made of metal, which helps with heat conduction, ensuring that cakes bake evenly. Besides jelly rolls, they can also be used for baking cookies, roasting vegetables, or making sheet cakes. Their versatility makes them a staple in many kitchens.