A muffin tin is a kitchen tool used for baking muffins and cupcakes. It typically has multiple small, round cups or wells, allowing you to bake several items at once. Muffin tins come in various sizes, with the standard size holding 12 muffins, but you can also find mini and jumbo versions. They are usually made from metal, silicone, or non-stick materials. Muffin tins are versatile and can be used for more than just muffins. You can also use them to bake cupcakes, mini quiches, or even to portion out ingredients for meal prep. Their design helps ensure even cooking and easy removal of baked goods.