Chop each peanut butter cup into 6 pieces. Microwave the kisses on high 1 minute or just until chocolate is melted when stirred; stir in 3-1/2 cups whipped topping until blended. Spread half of chocolate mixture into crust sprinkle with peanut butter pieces. Top with remaining chocolate mixture. Refrigerate 3 hours or until set. Spread with remaining whipped topping just before serving. Garnish each serving with kisses and candy eggs.