This is a pretty classic red velvet batter, with half made blue filled with cream cheese frosting.
- For the Cake
- 2 cups all-purpose flour
- 2 tablespoons unsweetened cocoa powder
- ½ teaspoon baking soda
- ¼ teaspoon salt
- 1 stick (½ cup) butter, room temperature
- 1 cup packed brown sugar
- 1 egg
- 1 teaspoon vanilla
- ½ cup buttermilk
- 1 tablespoon red food coloring*
- 1 tablespoon blue food coloring*
- For Cream Cheese filling
- 4 ounces cream cheese,
- room temperature
- ¼ stick (2 tablespoons) unsalted butter, room temperature
- ½ cups confectioner’s sugar, sifted
- ¼ teaspoon vanilla extract
Preheat oven to 375 degrees. Line 2 baking sheets with parchment paper and set aside.
In a medium bowl combine flour, cocoa powder, baking soda, and salt.
In the bowl of an electric mixer fitted with the paddle attachment, beat the butter on medium to high speed for 30 seconds. Beat in brown sugar until light and fluffy. Add the egg and vanilla and keep mixing until combined. Add 1/3 of the flour mixture and then half the buttermilk, beating after each addition until just combined. Repeat with remaining flour mixture and buttermilk ending with the flour mixture
Divide batter into 2 bowls. In one bowl, stir in the red food coloring. In the other bowl, stir in the blue food coloring.
Use a cookie scoop to place the dough onto the cookie sheets. Or transfer the dough to a pastry bag fitted with a 1/4-inch round frosting tip. Begin piping dough into quarter-sized rounds onto the parchment lined baking sheets placing them about 1-inch apart. If peaks form while piping, just wet your finger and smooth out the peak.
Bake in preheated oven for about 5 to 6 minutes until edges are set. Allow to cool 2 minutes on baking sheet then transfer to a wire rack to cool completely.
Cream Cheese filling
In the bowl of an electric mixer fitted with the paddle attachment, beat the cream cheese and butter until smooth. Add the powdered sugar and vanilla and beat until creamy and lump-free.
Match red velvet cookies up with blue velvet cookies based on size. Place a dollop of filling on one red velvet cookie and sandwich with a blue velvet cookie. Repeat for remaining cookies. Store in an airtight container (in refrigerator if not serving within an hour). Whoopie pies will stay for three to four days in the fridge.
Use 1 tablespoon food coloring for regular liquid food coloring. For gel or concentrated food coloring, use 1 teaspoon.