Preheat the oven to 350°F. In a mixing bowl, combine the flour, cornmeal, maple sugar, baking soda, and salt.
In a separate bowl, combine the buttermilk, oil, maple syrup, eggs, and vanilla extract.
Pour the wet mixture into the dry mixture and mix to combine.
Fold in blueberries.
Line two 12-cup muffin pans and fill each cup 2/3 full with the batter. Bake for 18 to 20 minutes, or until golden and a toothpick comes out clean when inserted into the center of a muffin.