Marshmallow creme (also called marshmallow fluff, marshmallow stuff, marshmallow spread, or marshmallow paste) is an American food item. It is a very sweet and spreadable. It is made out of marshmallows. Marshmallow creme and peanut butter are used to create a fluffernutter sandwich. In addition, marshmallow creme and Nutella can be spread on graham crackers to make s'mores.