Sprinkle 1/4 of the coconut onto sheet of wax paper. Spoon 1/4 of the chocolate mixture over coconut; roll into 8-inch log, with coconut completely covering outside of log. Repeat 3 times with additional sheets of wax paper, remaining coconut and chocolate mixture. Discard any unused coconut. Wrap logs tightly and refrigerate 3 hours or until firm (see Tip).