A Moon Pie^[1] is an American snack, popular across much of the United States, which consists of two round graham cookies, with marshmallow filling in the center, dipped in a flavored coating. The snack is often associated with the cuisine of the American South, where they are traditionally accompanied by an RC Cola.^[2] Today, MoonPies are made by Chattanooga Bakery, Inc., in Chattanooga, Tennessee.

The traditional pie is approximately 4 inches (10 cm) in diameter. A smaller version, called a Mini Moon Pie, is approximately half the weight, and a double-decker moon pie of the traditional diameter features a third cookie and an additional layer of marshmallow. The five primary flavors are chocolate, vanilla, banana, strawberry, and salted caramel. Orange and coconut appear seasonal during the Mardi Gras parading season.