A fluffernutter sandwich is a sweet treat made by spreading peanut butter and marshmallow fluff between two slices of bread. This combination creates a creamy and sugary filling that is popular among both children and adults. The sandwich is often enjoyed as a quick snack or dessert. The origins of the fluffernutter date back to the early 20th century in the United States. It is especially popular in New England, where it is considered a classic comfort food. Variations may include adding ingredients like banana or chocolate for extra flavor.