A skillet is a type of cooking pan that is typically round with high sides, used for frying, sautéing or browning food. The term can also refer to a flat-bottomed pan that is similar in shape and size to an American frying pan but has thinner walls and a flatter bottom. Skillets are made of various materials such as cast iron, stainless steel, aluminum, copper or non-stick material, each with its own advantages and disadvantages.