After I "choclified" a batch of my friend's boxed birthday cupcakes - yes, boxed, per a very specific request - I was left with about a cup and a half of homemade vanilla buttercream frosting. Inspired, I went to work in the kitchen playing around with sweet potatoes and oat flour as wheat flour alternatives. After a few iterations, I was finally satisfied with my eggless and flour-less (with wheat anyway) peanut butter cookie. Utilizing the remaining buttercream, I sandwiched the frosting between cookie shells to create a rather addictive Peanut Butter Whoopie Pie. Sure, it took some tinkering, testing, and tasting, but the chewy and crunchy cookie was quickly a success. Enjoy!!