Preheat the oven to 400 degrees. Grease an 8- or 9-inch baking dish generously with cooking spray.

Combine the dairy free milk and apple cider vinegar and let sit for 5 minutes.

In a large mixing bowl, whisk together the cornmeal, flour, baking powder, baking soda, and salt. Add the milk mixture, oil, and maple syrup and stir until fully combined.

Pour into the prepared pan and bake for 35 minutes or until browned, the top feels firm to the touch, and a toothpick inserted into the center comes out clean. Let cool for 10 minutes.

Cut into squares and serve.