Fall in love with this easy recipe for whoopie pies. Two light discs of chocolate sponge sandwich a fluffy vanilla buttercream filling. Perfect for cake sales, packed lunch treats or making friends at the office!. Beat the butter and sugar in an electric mixer on high speed until light and fluffy. Beat in the egg, followed by the vanilla and buttermilk. Reduce speed to low, add dry ingredients and beat until combined.. L.D. 71, officially known as "An Act to Designate the Whoopie Pie as the State Dessert", read "The whoopie pie, a baked good made of two chocolate cakes with a creamy frosting between them, is the official state dessert".. #HowItsMade Mondays 9/8c on Science This Whoopie Pie factory has a variety of delicious ingredients that give these traditional treats their signature taste.. Whoopie Pie (20) 32 minutes. 19 reviews . Here's what all the fuss about Whoopie Pies is about - and this recipe won't disappoint! What could be better than combining chocolate cake, with a creamy filling. Yummy! . Key lime pie in hand-held form? Yes please! These whoopie pies sandwich a zesty, creamy key lime filling around soft, tender, honey graham cracker-flavored cakes. With just the right amount of sweetness, they're perfect after a summer barbecue, or as a snack with a cold glass of iced tea..