12 Cup Muffin Non Stick Bun Fairy Cake Baking Tray Carbon Steel Mould Tin. This 12 cup bun baking tray is ideal for baking delicious muffins and cupcakes for your family and friends. The baking tray can be used to bake any number of yummy cakes and muffins, featuring 12 cup molds to make a batch of cakes.