Muffin cases are suitable for baking cupcakes, muffins or other desserts, and can also be used directly to display cookies, candies, fruits, and other foods. Safe and Durable Material: Our tulip muffin cases for baking are made of high-quality wood pulp paper, which is safe, non-fading, odorless, can withstand high-temperature baking, and is suitable for use in ovens and microwaves.