A cookie is a sweet biscuit with high sugar and fat content. Cookie dough is softer than that used for other types of biscuit, and they are cooked longer at lower temperatures. The dough typically contains flour, sugar, egg, and some type of oil or fat. It may include other ingredients such as raisins, oats, chocolate chips, or nuts. Cookie texture varies from crisp and crunchy to soft and chewy, depending on the exact combination of ingredients and methods used to create them