Preheat your oven to 400 degrees . Line a muffin pan with 12 baking cups .

In a small bowl , combine almond milk and apple cider vinegar . In another small bowl , make your flax egg by stirring together flax meal and water . Set both aside and let sit for at least 10 minutes .

In a large bowl , mix cornmeal , flours , baking powder , and salt together . Add almond milk mixture , flax egg , and maple syrup the bowl . Stir to combine , but do not overstir . Add the olive oil and blueberries and stir again until combined .

Use 1 / 4 cup of batter for each muffin tin . Bake for 20 minutes or until a fork or toothpick comes out clean . Let cool for 10-15 minutes before serving .