Boston cream pie is a classic American dessert that consists of two layers of sponge cake filled with a rich custard or cream. It is typically topped with a chocolate glaze, giving it a distinctive appearance and flavor. Despite its name, it is actually a cake rather than a pie. The dessert originated in Boston, Massachusetts in the 19th century and has since become a popular treat across the United States. It was designated as the official dessert of Massachusetts in 1996, highlighting its cultural significance and enduring popularity.