Preheat the oven to 350 degrees. Spray an 8 x 8 baking dish with cooking spray and set aside.
In a medium mixing bowl combine the flour, baking soda, baking powder, and salt. Mix well.
In a large mixing bowl cream together the butter and sugars.
Add in the egg and vanilla and mix well.
Add the dry ingredients to the wet ingredients and mix well to combine.
Gently fold in the raspberries and white chocolate chips.
Spread the batter into the prepared pan.
Bake for 25-30 minutes or until the cookies have browned and look set in the center.
Remove the cookies from the oven and let them cool completely. Cut into 12 large cookie bars.