I grew up in New England where the whoopie pie is a popular treat. They're best known in Maine and Pennsylvania but there was no shortage of them in Massachusetts bakeries and convenience stores. My personal favorite is the classic chocolate cake with marshmallow filling.
Whoopie pies aren't cookies or cakes; they're kind of like a hybrid of the two. Some of my recipes include mixing milk, baking soda and vinegar which makes me feel like I'm doing a science experiment :) The most important part of the whoopie is the filling. Like I mentioned, the classic marshmallow filling is my favorite but there are many, many types of filling you can use, like buttercream, ganache or even lemon-mascarpone, to name a few.
I hope you enjoy the pictures :)
