The whoopie pie....Is it a pie? Not at all. Is it a cake? Sort of. Is it a cookie? Only that it looks like one. It is about the size of a hamburger bun with two rich, chocolate cake layers and a creamy filling sandwiched between them. The whoopie pie's origins are thought to be with the Amish of Lancaster County, Pennsylvania that settled here in the early 1700s, although Maine and New Hampshire also lay claim to the birthplace of the whoopie pie. It is the official state treat of Maine.read more