Bake in the preheated oven for 10 to 12 minutes. Let cakes cool then make sandwiches from two cakes filled with the filling. To Make Whoopie Pie Filling: Beat egg white and mix with the milk, 1 teaspoon vanilla and 125g of the icing sugar. Mix well then beat in the butter and the remaining sugar. Beat until light and fluffy. Pumpkin. To cook the pumpkin, either bake or steam it, then peel and . The Internet is abuzz with recipes and stories of whoopie pie folklore, while customers everywhere are descending on bakeries in droves demanding these delectable treats. This adorable volume . 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".. Whoopie Pie Recipes Looking for whoopie pie recipes? Allrecipes has more than 20 trusted whoopie pie recipes complete with ratings, reviews and baking tips.. 496 results for whoopie pie Save whoopie pie to get e-mail alerts and updates on your eBay Feed. Unfollow whoopie pie to stop getting updates on your eBay feed.. 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..