Famous Chocolate Refrigerator Roll

ADD vanilla to whipped cream; stir gently until well blended. SPREAD 1-1/2 tsp. of the whipped cream mixture onto each wafer. Stack wafers together, then stand on edge on serving platter to make a log. Frost with the remaining whipped cream mixture. REFRIGERATE at least 4 hours or overnight. Cut dessert diagonally into 14 slices to serve. Store leftover dessert in refrigerator.