Mix confectioners' sugar, pecans, butter and creme de menthe in medium bowl until well blended. Cover and refrigerate until firm, about 30 minutes.
Line a large baking sheet with foil. Shape pecan mixture into 1 1/4 inch round balls and place on sheet. Refrigerate until firm, about 15 minutes. Dip half of each ball into melted chocolate; return to sheet. Refrigerate until set, about 1 hour. (Can be prepared ahead. Place in airtight container and refrigerate five days or freeze up to one month.) Typed in MMformat by cjhartlin@msn. Com