Preheat oven to 350°F. Line an 8"x8" baking pan with parchment paper and spray with cooking spray.Place butter in a large microwave safe bowl, microwave to melt butter. Add sugar to melted butter, beat with an electric mixer. Add eggs and vanilla. Beat until well combined.Add salt, flour, baking powder, cinnamon and ginger. Mix until just combined. Do not over mix or the bars will be tough. Fold in 3/4 cup cranberries and 3/4 cup white chocolate chips. Pour batter into prepared pan.Bake for 20-22 minutes until the center is set.Meanwhile melt remaining white chocolate in a small microwave safe bowl. Set aside. Combine cream cheese, powdered sugar and orange juice in a medium size bowl. Beat until combined. Pour in half of white chocolate, reserve the remaining chocolate. Beat to combine. Set aside.Remove bars from oven and place on a cooling rack.Frost bars with cream cheese frosting. Sprinkle with remaining cranberries. Drizzle with reserved melted white chocolate.Serve and enjoy!