Finely chop 1 candy bar. In small bowl, combine chopped candy bar, graham cracker crumbs and margarine. Set aside.
Prepare filling according to package directions using milk. Stir into crumb mixture. Cover and freeze for 4 hours.
To serve, place scoops of frozen mixture into dessert dish. Cut remaining candy bar in quarters crosswise. Cut each in half lengthwise. Place in frozen mixture and top with cherries.
NOTE: You can use any candy bars or cookies in mixture.
