Preheat the Oven: Preheat your oven to 425°F (220°C). Grease or line an 8-inch square baking dish or a cast-iron skillet.
Mix Dry Ingredients: In a large mixing bowl, combine White Lily self-rising flour, cornmeal, sugar (if using), and salt. Stir well to evenly distribute the dry ingredients.
Combine Wet Ingredients: In a separate bowl, whisk together milk, eggs, and melted butter until fully combined.
Combine Wet and Dry Ingredients: Pour the wet ingredients into the dry mixture and stir gently until just combined. Be cautious not to overmix.
Pour and Bake: Pour the batter into the prepared baking dish or skillet, smoothing the top with a spatula.
Bake: Bake in the preheated oven for 20-25 minutes or until the top is golden and a toothpick inserted into the center comes out clean.
Cool and Serve: Let the cornbread cool slightly before slicing and serving. Enjoy warm with butter, honey, or your favorite toppings!