Preheat the oven to 350 degrees F and prepare a baking sheet with parchment paper
In a medium bowl combine the flour, ginger, cinnamon, baking powder, baking soda and salt; set aside
In a mixing bowl with paddle attachment, cream together the butter and light brown sugar until combined
Add in the molasses, vanilla extract and egg and mix to combine
Slowly add the dry ingredients to the butter mixture and mix until smooth and creamy and then add the white chocolate chips
Scoop the batter into 1 ¼ ounce balls, roll each ball of dough in granulated sugar to cover completely and then place on a parchment lined baking sheet about 3 inches apart
Bake the cookies for 9-10 minutes
Remove the cookies from the oven and allow them to cool before removing them from the pan