Make way, cupcakes--it's whoopie pie time Everyone is falling in love with America's classic sandwich treat--two soft cookies with a creamy filling. Now, baker extraordinaire Claire Ptak, a pastry alum of Berkeley's famed Chez Panisse and proprietor of Violet, her own baking company, takes the humble whoopie pie to new heights. Here are 60 irresistible recipes--made with fresh, seasonal ingredients--that show home bakers how to make the...