Preheat oven to 350°F (175°C). Grease and flour a loaf pan (preferably 9x5 inch).
In a large bowl, whisk together oat milk, apple cider vinegar, applesauce, and vanilla extract.
In a separate bowl, combine flour blend, sugar/stevia, baking powder, baking soda, and salt.
Add the dry ingredients to the wet ingredients gradually, mixing until just combined. Do not overmix.
Gently fold in the blueberries. Be careful not to overmix as they can burst.
Pour the batter into the prepared loaf pan.
Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean.
Let the loaf cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.