Whoopie Pies are a popular dessert that consists of two soft, cake-like cookies sandwiching a creamy filling. Traditionally, the cookies are made from chocolate or vanilla cake batter, while the filling is often a sweet mixture of marshmallow fluff and buttercream. They are known for their round shape and are typically about the size of a small hand. Originating in the United States, particularly in New England, Whoopie Pies have become a beloved treat across the country. They are often enjoyed at fairs, bakeries, and home gatherings, making them a nostalgic favorite for many. Variations exist, with different flavors and fillings, but the classic combination remains the most popular.