Moist chocolate cakes sandwich marshmallow buttercream for a drool-worthy treat! These gluten-free whoopie pies taste worlds better than store-bought and they're easy to make too!
½cupDutch processed cocoa powderHershey's labels it dark cocoa powder
1teaspoonbaking soda
¼teaspoonkosher salt
½cupunsalted butter, room temperature
¾cupsugar
¼cupdark brown sugar
1egg, large
1cupbuttermilk
2tbspvegetable oil
For the Marshmallow Buttercream
½cupunsalted butter, room temperature
¾cuppowdered sugar
7.5 oztub of marshmallow cream
Instructions
Preheat oven to 350 degrees Fahrenheit. Line a sheet pan with parchment paper or a silicone baking mat and set aside.
In a mixing bowl, combine the gluten-free flour, cocoa powder, baking soda, and salt. Stir to combine then set aside.
In a liquid measuring cup, combine the buttermilk and oil, Set aside.
In the bowl of a stand mixer, combine the butter with both sugars. Beat until light and fluffy - about 4 minutes.
Add the egg and beat until incorporated. Stop the mixer and use a spatula to scrape down the sides of the bowl.
Add half of the dry ingredients to the mixture and beat until incorporated. Add half of the buttermilk mixture and beat until incorporated. Scrape down the sides of the bowl and repeat.
Use a small portion scoop to scoop 8 cakes onto the sheet pan. Bake for 11 to 12 minutes. Repeat until all the batter is gone. You should have 24 round cakes to make 12 whoopie pies. Once they're cool, fill with marshmallow buttercream.
For the frosting:
In the bowl of a stand mixer, combine the butter, marshmallow cream, and powdered sugar.