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!. 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 best way to describe a whoopie pie is that it’s a mini chocolate cake sandwich in cookie form. It is made of two round pieces of chocolate cake, with a creamy filling or frosting sandwiched between them. A traditional filling is a marshmallow filling, but different kinds of buttercream are widely used too. The original and most commonly used flavor of whoopie pies is chocolate, but you . We work out the trending price by crunching the data on the product’s sale price over the last 90 days. New refers to a brand-new, unused, unopened, undamaged item, while Used refers to an item that has been used previously.. 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.. 8/31/2009 Classic whoopie pie! The only thing I changed was omitting the egg whites from the filling and adding about 2 Tb. of milk and an extra 1/4 cup of powdered sugar..