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 . A well-made whoopie pie looks like a work of art! The small, round, cake cookie with a creamy filling should practically melt in your mouth! Here are The 11 Best Whoopie Pie Recipes that left us drooling. We pretty much want to try them all!. Whoopie Pie Pops December 8, 2011 / Cake Pops , Chocolate , Cookie , Dessert , Recipe / 24 Comments To my regular readers, these might look a little familiar since they look almost identical to the peppermint chocolate cake pops that I posted on Monday.. 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.. This is the best Whoopie Pie Recipe we have tried…and we have tried a few! Delicious with Marsmallow Frosting or Peanut Butter Buttercream Frosting. Delicious with Marsmallow Frosting or Peanut Butter Buttercream Frosting.. Spoon 12 even dollops onto each baking sheet, leaving plenty of space between them. Bake on the middle shelf of the oven for 10 to 12 minutes. Bake on the middle shelf of the oven for 10 to 12 minutes..