A cookie sandwich is a dessert made by placing a filling, such as frosting, ice cream, or jam, between two cookies. The cookies can be made from various recipes, including chocolate chip, oatmeal, or sugar cookies. This treat combines the flavors and textures of the cookies with the creamy or sweet filling, creating a delightful bite. Cookie sandwiches are popular at bakeries and ice cream shops, often enjoyed as a fun and portable dessert. They can be customized with different cookie types and fillings, making them a versatile option for various tastes and occasions.