#HowItsMade Mondays 9/8c on Science This Whoopie Pie factory has a variety of delicious ingredients that give these traditional treats their signature taste.. 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!. Makin' Whoopie Pies allows you to create your own whoopie pie ice cream sandwich. They don't have that many ice cream flavors to choose from, about six basic flavors. After choosing the ice cream flavor, you choose the flavor of whoopie pie (coffee, pumplin, chocolate chip, confetti, red velvet, etc.). You can mix and match. If you don't want ice cream, they have a wide variety of frosting . The Wilton Nonstick 12-Cavity Whoopie Pie Pans should be filled with 1/8 cup (2 Tbsp) of batter per shell, and the 24-cavity mini pans take half that much batter. So you may get fewer, or more, than 36 filled pies out of this recipe Also, although they freeze beautifully, if you don't want to bake that many, you can cut the recipe in half.. 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.. The Whoopie Pie Mania. By Suzanne Perazzini 14 Comments. So, remember that food show I mentioned we went to on Sunday? The one were I got all sorts of freebies? Well, one of the stalls was a little more exciting than the others – the one with the whoopie pies. In the US, these are common place but here in New Zealand we are just starting to discover them. I have already made a couple of .