MIX 1/4 cup of the whipped topping, the cream cheese, melted chocolate and sugar until well blended.
PLACE 2 of the wafers in bottom of each of 2 paper-lined medium muffin cups. Cover with 1 Tbsp. of the whipped topping mixture. Repeat layers. Top evenly with remaining whipped topping. Cover.
REFRIGERATE at least 1 hour.