A fluffernutter (also called a "peanut butter and marshmallow sandwich", "peanut butter and marshmallow fluff sandwich", or "peanut butter and marshmallow stuff sandwich") is a sandwich made with peanut butter and marshmallow creme usually served on white bread. Variations of the sandwich include the substitution of wheat bread and the addition of various sweet, salty, and savory ingredients. The term fluffernutter can also be used to describe other food items, primarily desserts, that incorporate peanut butter and marshmallow creme. The sandwich was first created in the early 20th century after marshmallow creme, a sweet marshmallow-like spread, was invented in Massachusetts. During World War I, a recipe for a peanut butter and marshmallow creme sandwich, the earliest known example of the sandwich, was published. The term "fluffernutter" was created by an advertising agency in 1960 as a more effective way to market the sandwich. The sandwich is particularly popular in New England and has been proposed as the official state sandwich of Massachusetts. Recipe and variations A fluffernutter is made by spreading peanut butter on a slice of bread, then spreading an equal amount of marshmallow creme on another slice and finally combining them to form a sandwich. Variations of the recipe include wheat bread instead of white, Nutella hazelnut spread instead of, or in addition to, peanut butter, and the addition of sweet ingredients like bananas or savory and salty ingredients like bacon. The Fluffernutter itself is often seen as a variation on the peanut butter and jelly sandwich. Though often seen as a food for children, the Fluffernutter recipe has been adapted to appeal to adult tastes. For example, a New York caterer serves a fluffernutter hors d'oeuvre in a toasted ice cream cone with a spoon of peanut butter and torched marshmallow creme on top. The term fluffernutter has also been used to describe other foods that feature peanut butter and marshmallow creme, including fluffernutter cookies, bars, and cupcakes. Durkee-Mower, the company that produces Marshmallow Fluff, a brand of marshmallow creme, produces a cookbook that features recipes for fluffernutter bars, frosting, pie, and a shake. In 2006, Brigham's Ice Cream and Durkee-Mower introduced a fluffernutter flavor, which featured peanut butter and Marshmallow Fluff in vanilla ice cream. Fluffernutter was also the name of a candy briefly produced by the Boyer Brothers candy company beginning in 1969. History Marshmallow creme, one of the two main ingredients of a fluffernutter,