Sandwich cookies are a type of cookie that consists of two or more layers of dough, typically with a filling in between. The name comes from their resemblance to a traditional sandwich, where bread is used as the base and fillings such as meat, cheese, vegetables, or spreads are placed in-between. In the case of these cookies, the "bread" layer would be made up of cookie dough, while the filling could include anything from chocolate chips to fruit preserves, nuts, or even candy pieces. The finished product is a delicious and often decorative treat that combines the texture and flavor of two different types of cookies in one bite.