MIX 3 cups of the cookie crumbs and the cream cheese until well blended. Shape into (1-inch) balls.
DIP balls in melted chocolate; place on waxed paper-covered baking sheet. You can sprinkle tops with reserved Oreo crumbs or decorate with melted white chocolate.
REFRIGERATE 1 hour or until firm. Store any leftover truffles in tightly covered container in refrigerator.