Whoopie Pies are so popular and you can make them festive to match the season just by adding some crushed candy canes to the marshmallow filling. They are then transformed into a Christmas cookie before your eyes. The magic of Christmas, a Peppermint Whoopie Pie! The filling is dyed pink or green to match the color of the candy canes and the crunch as another layer of delight. Now we are talkin’ a kid friendly way to make whoopie!