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Traditional Whoopie Pies
Ingredients (17)
- FOR THE CAKES:
- 2 cups all purpose flour
- 1/2 cup Dutch-processed cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup packed light brown sugar
- 1/2 cup (1 stick) unsalted butter,
- 1 large egg,
- 1 teaspoon vanilla extract
- 1 cup buttermilk
- 1/4 teaspoon instant espresso powder
- FOR THE FILLING:
- 1/2 cup (1 stick) unsalted butter,
- 1 cup powdered sugar
- 1½ teaspoons vanilla extract
- dash of salt
- 2 (scant) cups Marshmallow Fluff or Creme
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