Preheat: Preheat your oven to 400°F. Place a 10-inch cast iron skillet in the oven to heat up while you make the batter.
Mix: In a large mixing bowl, whisk together cornmeal, all-purpose flour, brown sugar, baking powder, baking soda, and salt.
Combine: In a separate mixing bowl, combine apple cider vinegar, vegan yogurt, oil, and egg replacer. Whisk until well combined.
Incorporate: Add the wet ingredients to the dry ingredients and mix until just combined. Do not overmix the batter.
Pour: Remove the hot skillet from the oven and coat with 1 tablespoon of butter or oil spray. Pour the batter into it. Hear that sizzle! Yum.
Bake: Smooth the top of the batter with a spatula and return the skillet to the oven. Bake for 20 minutes or until a toothpick inserted into the center of the cornbread comes out clean.
Cool: Allow the cornbread to cool for a few minutes before slicing and serving.