A muffin tin is a kitchen tool used for baking muffins, cupcakes, and other small baked goods. It typically consists of a metal or silicone tray with several cup-shaped indentations, allowing multiple items to be baked at once. Muffin tins come in various sizes, with the standard size holding 12 cups. These tins can also be used for other purposes, such as making mini quiches or organizing small items. They are often made from materials like aluminum or non-stick coatings, which help ensure even cooking and easy removal of baked goods. Muffin tins are a versatile addition to any kitchen.