In large mixing bowl beat butter with wire whisk or electric mixer until softened. Whisk or beat in sugars, baking powder, soda, and salt. Whisk or beat in eggs and vanilla until combined. With whisk, or with electric mixer on low speed, beat in flour. Stir in dried cranberries and white chocolate. Spread butter in prepared pan. Sprinkle with fresh cranberries; press in lightly with a spatula. Bake 25 to 30 minutes or until toothpick inserted near center comes out clean.