The chocolate whoopie pie is a New England phenomenon. In fact, the chocolate whoopie pie is the official dessert of Maine. Now you can make this classic Down East treat at home with Stonewall Kitchen's delicious Whoopie Pie Mix. Consisting of two super moist chocolate cakes surrounding a luscious layer of creamy, buttery filling, don't be surprised if you hear "whoopie" every time you serve this to family and friends.