Mint Chocolate Crinkle Cookies

"These beautiful cookies are known as Chocolate Crinkles or Black and Whites which are perfect names for this deliciously soft, fudge-like chocolate cookie that is encased in a coating of confectioners (powdered or icing) sugar. The batter for these cookies is chock full of chocolate and because the flavor of the chocolate takes center stage make sure to use a high quality, semi sweet or bittersweet chocolate that you enjoy eating out-of-hand. Once the batter for the cookies is made it does need to be well chilled so it can be easily rolled into small balls. What makes these cookies so amazing is what we do after the batter is chilled, and that is to roll them in confectioners (icing or powdered) sugar. It is important that no chocolate shows through. The surprise is that as these white balls of dough bake, they spread, making cracks in the white sugar which reveals the soft chocolate cookie underneath. Do not to over bake these cookies or they will be dry and that is not how we want them to taste. We want them to be nice and soft. I love these cookies warm from the oven so, if possible, make them shortly before serving although they can be stored for a day or two - if they last that long...."