Ever heard of a whoopie pie? They're a bit like a macaroon but with a more cake-like texture. Hugely popular Stateside, the name comes from when Amish women would put them in farmers' lunchboxes and they'd supposedly shout 'whoopie' if they found one in their box!. 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".. Heat oven to 180C/160C fan/gas 4 and line baking trays with parchment. Mix flour, cocoa, bicarb, sugar and a pinch of salt. Whisk the egg, oil and buttermilk together, then mix into dry ingredients with 75ml boiling water.. Whoopie Pie Recipe from a box cake mix . Makes 12 whoopie pies. Preheat oven to 400 degrees. Spray whoopie pie pan with non stick spray; Beat all ingredients on medium low speed until well combined; Drop 2 tablespoons of batter into each cavity. Tap pan so batter spreads to edges. Bake for 8 to 10 minutes. Let cool for a few minutes, remove from pan and place on cooling rack. If you over . 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! . Chocolate whoopie pies are an American favourite that you can now create at home with this easy to follow, delicious and simple recipe from Jamie Oliver..