Make evenly sized and shaped muffins and cupcakes every time with this Chicago Metallic 12 Cup Muffin Pan. Constructed from heavy-weight, aluminized steel for superior heat conduction and even baking with a reinforced rolled rim to prevent warping and to support the weight of the contents, this pan has a traditional uncoated baking surface, so the compartments can be greased with butter, sprayed with cooking spray, or filled with cupcake liners. Makes one dozen muffins or cupcakes. Measures 15-3/4 by 11 inches and features 12 cups, each measuring 2-3/4 inches in diameter by 1-1/4-inches high. Hand-washing is recommended to extend the life of the product.