This 5-piece Baking Set includes a 1.5 pound loaf pan, a medium classic cookie sheet, a 12-cup muffin pan and a 13 x 9-inch cake pan with a lid that will also fit the muffin pan. Baking professionals know that the secret to evenly-baked and perfectly browned food is to cook with aluminum bakeware. Aluminum is widely known for its excellent heat conductivity and cooks more evenly and thoroughly than other metals. Turns out perfect results every time, whether you're making bars, brownies, or cookies. Features a galvanized steel reinforcement around the rim to prevent warping. Nonstick interior for easy release and cleanup..