The Fluffernutter Cake

If you haven’t heard of the fluffernutter, it’s a sandwich native to Massachusetts with peanut butter and marshmallow fluff in-between two pieces of bread. This cake represents a fluffernutter sandwich perfectly, with dense, peanut butter flavor and plenty of creamy marshmallow frosting. 🙂

yield: one cake



4 tbsp. butter, softened

4 tbsp. coconut oil, melted

3/4 cup granulated sugar

2 eggs

2/3 cup creamy peanut butter

1 tsp. vanilla extract

1 and 1/4 cups all-purpose flour

1 tsp. baking powder

1/4 tsp. salt

1/4 cup milk

Marshmallow Frosting

3 cups mini marshmallows, melted or 7.5 oz. marshmallow fluff

2 tbsp. butter,softened

1/2 cup confectioners’ sugar

1 tsp. vanilla extract

1/2 tsp. salt

1/2 tsp. almond extract

Peanut butter candies to decorate (optional)


Preheat oven to 350 degrees Fahrenheit. Line butter or oil around a 12 in. round cake pan. Set to side.

Bake the Cake: In a large bowl, beat the butter, oil, and granulated sugar together until creamy. Add one egg at a time, until combined thoroughly. Scrape down sides of bowl if needed. Mix in the peanut butter and vanilla extract. Set to side.

Whisk flour, baking soda, and salt together in a medium mixing bowl. In 3 additions, add the dry mixture into wet mixture slowly. Do not over-mix while adding milk to batter.

Spoon batter into cake pan. Bake for 20 minutes in the oven. Remove cake from oven and cover cake loosely with aluminum foil. Put back into oven and bake for another 13 minutes until a toothpick comes out clean of batter. Transfer cake onto a wire rack and cool completely.

Make the frosting: Beat butter in a medium mixing bowl until creamy. Mix in the melted marshmallows/marshmallow fluff (either one works) into the butter mixture. Add in the powdered sugar, almond extract, vanilla extract, and salt. To your desire, add more or less salt and sugar to make frosting sweeter or saltier.

Transfer cake to a cake stand. Frost any way as wanted. Decorate with any peanut butter candies you love. 🙂 Enjoy your take on the traditional Fluffernutter sandwich!


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