Preheat oven to 350°F. Grease a 7 x 9 1/2 -inch (or 8-inch square) pan and coat with raw sugar.
In a medium bowl whisk together the flour, spices, baking soda, and salt.
In a large bowl, using a handheld mixer on low speed, combine the coconut oil, sugar, and molasses. Turn speed to medium high and beat for about a minute or until fluffy.
Add the egg and continue mixing until incorporated.
Add 1/3 of the flour mixture and mix on low speed until just blended. Add ½ the buttermilk and continue mixing until just blended. Repeat with another 1/3 flour, remaining buttermilk and then finish with the remaining flour.
Use a rubber spatula to gently (and quickly) fold in 1 ½ cups of the blueberries and candied ginger. Pour the batter into the prepared pan and spread evenly. Sprinkle remaining blueberries and raw sugar over the top.
Bake in the center of the oven for about 35-45 minutes (45-50 minutes if you used frozen berries) or until a tester comes out with moist crumbs, don’t over bake.
Serve warm or at room temperature.