Red Fruit Napoleons

In a medium bowl, combine strawberries, raspberries and granulated sugar. Let stand 15 minutes, stirring occasionally so the juices run. Meanwhile, microwave white chocolate in medium bowl for 11/2 minutes; stir until melted and smooth. Let cool slightly. In a small bowl, with mixer on high speed, beat heavy cream with sour cream until stiff peaks form. Gently fold cream mixture into white chocolate with a rubber spatula just until combined. Place 1 cookie on each of 8 plates; top with half of cream mixture and half of fruit. Repeat layering. Top with remaining cookies; garnish with confectioners’ sugar and more strawberries, if you like.