Chocolate Whoopie Pies With Vanilla Buttercream Filling Recipe
Ingredients 1 3/4 cups unbleached all-purpose flour 1/2 teaspoon kosher salt 3/4 cup unsweetened cocoa powder 1 1/2 teaspoons baking soda 1/2 teaspoon baking powder 1/2 cup (1 stick) unsalted butter, room temperature 1 cup granulated sugar 1 large egg 1 cup buttermilk, room temperature 1 teaspoon pure vanilla extract 1/2 cup (1 stick) unsalted butter, room temperature 3 to 4 cups confectioners' sugar 1/4 cup milk 1/2 teaspoon pure vanilla extract Preparation Make the cookies: Preheat oven to 400 degrees....