These delicious Chocolate-Peppermint Sandwich Cookies are a nod to the current craze for “gourmetified” junk-food classics. In fine bakeries around New England, we now see tongue-in-cheek artisanal interpretations of Oreos, whoopie pies, and Pop-Tarts. Here, we took the Oreo meme a step further, adding crushed candy canes for a little holiday pizzazz.