Preheat oven to 400°F/200°C. Spray an 8x8" pan with vegetable spray.
Combine the corn muffin mix, plant-based milk, flax egg, and vegetable oil in a bowl. Stir to combine.
Pour batter into prepared pan and bake for 20 to 25 minutes, until the cornbread is golden on top.
Serve warm. Place in a sealed container and refrigerate any unused portions. It should last 4 - 5 days in a the fridge; up to a month in the freezer.
Notes
I specify to use plain plant-based milk, but there have been times when all I had was vanilla-flavored milk and this recipe still came out tasting fine.If you're using a muffin pan, reduce cooking time to approximately 18 minutes.
Egg Substitutes
Chia egg
Vegan plain yogurt — 1/4 cup of yogurt can substitute for one egg.
Tofu — You can whip tofu in a blender or food processor and use it as an egg substitute. The same ratio works here, roughy 1/4 cup of whipped tofu can be used for one egg.
Aquafaba — Use 3 tablespoons of liquid from a can of chickpeas (referred to as aquafaba) as a substitute for one egg.