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Homemade Chocolate Whoopie Pies

  • Author: Elise
  • Prep Time: 15 minutes
  • Cooling Time: 15 minutes:
  • Cook Time: 10 minutes
  • Total Time: 40 minutes
  • Yield: 15 whoopie pies 1x
  • Category: Chocolate, Chocolate Cake, Whoopie Pies
  • Cuisine: American


Homemade Chocolate Whoopie Pies are the simplest and most delicious way to serve chocolate cake. These have two chocolate cake cookies filled with marshmallow buttercream. They are moist, fluffy, and so addictive! 



For the Cake

  • 2 1/3 cups all purpose flour
  • 1/2 cup unsweetened cocoa powder
  • 1 teaspoon baking soda
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon salt
  • 3/4 cup granulated sugar
  • 1/2 cup light brown sugar
  • 1 large egg, room temperature
  • 1/2 cup vegetable oil
  • 2 teaspoons vanilla extract
  • 1 cup buttermilk, room temperature

For the Marshmallow Filling

  • 1/2 cup unsalted butter, room temperature
  • 1 1/2 cups powdered sugar
  • 1 1/2 cups marshmallow fluff
  • 1/2 tablespoon milk


For the Cake

  1. Preheat your oven to 350 degrees Fahrenheit. Line baking sheets with parchment paper. Do not skip out on properly preparing your sheets, as you will risk the cake pieces sticking to the pan and breaking.
  2. In a large bowl, whisk flour, cocoa powder, baking soda, baking powder, salt, and granulated sugar together.
  3. In a medium bowl, whisk light brown sugar, room temperature egg, vegetable oil, vanilla extract, and half of the room temperature buttermilk.
  4. Add wet ingredients to the dry, whisking for about 10 seconds before adding remaining buttermilk. Whisk until just combined, scraping down the bowl with a spatula to ensure everything is fully incorporated.
  5. Using a tablespoon, scoop batter into heaping tablespoon portions onto your baking sheet. This does not need to be exact. You should be aiming for a little over 1 1/2 tablespoons of batter per cake piece. Ensure your batter is at least 2 inches apart, as the cake pieces will spread and rise when they bake.
  6. Bake at 350 for 9-12 minutes. Cake should spring back when poked in the center and a toothpick inserted into the center will come out with moist crumbs. Underbaking will cause the cake pieces to fall flat as they are cooling, but overbaking will lead to dry cake. Keep your eye on your cakes starting at the 8 minute mark!

For the Filling

  1. In the bowl of a stand mixer (preferred) or a large bowl with an electric mixer, beat butter until smooth. Add powdered sugar and beat until smooth and combined. Be patient, as it may take some time for the sugar to fully incorporate.
  2. Add marshmallow fluff and milk, and beat until combined.
  3. If desired, place filling in a piping bag or large Ziploc bag, cutting off the tip before piping filling onto half of the cooled cake pieces.
  4. Stack remaining cake pieces on top of the filled pieces to create sandwiches.

Keywords: Chocolate Whoopie Pies, Chocolate Cake, Marshmallow Fluff Filling, Chocolate