On serving plate, place 1 cake layer, rounded side down. Spread with half of the whipped topping mixture (about 3/4 cup) to within 1/4 inch of edge. Top with second layer, rounded side up. Frost side and top of cake with frosting. Pipe remaining whipped topping mixture around top of cake. Refrigerate 1 to 2 hours or until chilled. Garnish top of cake with espresso beans. Store covered in refrigerator.