How to Make It
Preheat oven to 375°.
In a large bowl, whisk together the cornmeal, flour, sugar, baking powder, baking soda, and salt; set aside.
In another bowl whisk together buttermilk, eggs, melted butter, and vanilla. Stir the wet mixture into the dry mixture making sure all the ingredients are well combined. Fold in the blueberries.
Grease a 12-cup muffin tin well and fill each cup 2/3 of the way full with batter. Bake at 375° for 25 minutes or until the muffin tops are golden. Remove the muffins from oven and cool on a wire rack.