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Chocolate Cupcakes with Marshmallow Buttercream Frosting

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If you want a quick, easy, decedent, and delicious treat for your sweetie on Valentine’s Day, then this is the recipe for you.


  • 1 chocolate box cake mix (like Duncan Hines or Betty Crocker)
  • 4 eggs
  • 1 cup water (at room temperature)
  • 1 stick unsalted butter (at room temperature)
  • 1 cup mayonnaise
  • Mini chocolate chips for topping (about 1/2 cup)

For the frosting

  • 1 cup unsalted butter (at room temperature)
  • 7 oz container marshmallow creme (fluff)
  • 1 cup powdered sugar
  • 1/4 teaspoon vanilla extract


  1. Preheat oven according to box directions. Fill cupcake tin with liners and set aside. In a large bowl pour the cake mix, eggs, water, butter, and mayonnaise, and using a hand mixer blend until well combined.
  2. Bake according to the box. About 18-20 minutes for cupcakes.
  3. Once baked, place cupcakes on a cooling rack and cool completely.
  4. Once cooled, frost with marshmallow buttercream frosting and top with mini chocolate chips.

For the frosting

  1. Using a hand mixer, blend together the butter and marshmallow creme until light and fluffy. Add the powdered sugar and vanilla. Blend until thick, but do not over-beat.