WHOOPIE PIE MARSHMALLOW FILLING RECIPES

Steps:

• Preheat oven to 350°F.
• Whisk together flour, cocoa, baking soda, and salt in a bowl until combined. Stir together buttermilk and vanilla in a small bowl.
• Beat together butter and brown sugar in a large bowl with an electric mixer at medium-high speed until pale and fluffy, about 3 minutes in a standing mixer or 5 minutes with a handheld, then add egg, beating until combined well. Reduce speed to low and alternately mix in flour mixture and buttermilk in batches, beginning and ending with flour, scraping down side of bowl occasionally, and mixing until smooth.
• Spoon 1/4-cup mounds of batter about 2 inches apart onto 2 buttered large baking sheets. Bake in upper and lower thirds of oven, switching position of sheets halfway through baking, until tops are puffed and cakes spring back when touched, 11 to 13 minutes. Transfer with a metal spatula to a rack to cool completely.
• Beat together butter, confectioners sugar, marshmallow, and vanilla in a bowl with electric mixer at medium speed until smooth, about 3 minutes.
• Spread a rounded tablespoon filling on flat sides of half of cakes and top with remaining cakes.

Steps:

• Preheat the oven to 350 degrees F (175 degrees C). Line 2 baking sheets with parchment paper. Lightly coat a wire rack with cooking spray.
• Stir brownie mix and flour together in a medium bowl until well combined. Add chocolate chips, oil, and eggs; stir until well blended.
• Scoop 20 rounded tablespoons onto the prepared baking sheets. Decorate 1/2 of the cookies with candy sprinkles.
• Bake in the preheated oven for 9 to 10 minutes. Remove from the oven and let stand for 2 to 3 minutes before removing to the sprayed rack to cool completely, about 30 minutes.
• Meanwhile, combine powdered sugar, butter, and vanilla in the bowl of a stand mixer fitted with the paddle attachment; blend until light and fluffy, about 4 minutes. Fold in marshmallow creme.
• Place marshmallow mixture in a large zip-top bag and cut a small hole in one corner. Pipe filling onto the center of one plain cookie and top with a sprinkled cookie. Repeat with remaining filling and cookies.