Preheat oven to 400° F. Spray or lightly grease a 9-inch round cake pan.
Stir in egg, milk, and vegetable oil until well combined. Pour batter into prepared pan.
Bake in preheated oven for 20 to 25 minutes, or until a toothpick inserted into the center of the bread comes out clean.
Keywords: moist cornbread, cast iron baking