Start by preheating your oven to 375F (190C), and lightly grease a 9" baking mold.
In a large bowl, combine the flour, cornmeal, baking soda, and salt. Whisk until well combined.
In a separate bowl, mash the bananas to form a paste. Add to them, the sugar, eggs, oil, and whisk until smooth. Whisk the milk into the wet ingredients.
Pour the wet ingredients into the bowl with the dry ingredients. Fold the wet and dry ingredients together until there are no more dry ingredients. Make sure to not overmix, mixture should still be lumpy.
Pour the batter into the prepared baking pan. Use a 9" square or 9" round baking pan. If using a 8" baking pan or skillet, it might need a little bit longer baking time.
Place the pan in the preheat oven and bake for 25-30 minutes or until a toothpick inserted in the middle comes out clean. Remove the Banana Cornbread from the oven and let it cool 10-15 minutes before slicing into it.