Super durable, lighter than cast iron and oh, that gorgeous unexpected slate blue. Perfect for baking cupcakes, muffins or mini quiches, our slate blue 12-cup muffin pan is part of our exclusive bakeware collection that takes its cue from professional kitchens. Made of carbon steel—an alloy of 99% iron and 1% carbon that's nearly indestructible—the pan heats quickly and maintains consistent temperatures for perfectly browned baked goods. A double layer of silicone-based non-stick coating ensures easy release and quick cleanup.