Make this cornbread for our Cornbread-and-Biscuit Dressing.
Preheat oven to 425 degrees. Butter an 8-inch square baking dish. Whisk together cornmeal, salt, sugar, and baking powder in a large bowl. Whisk together eggs, buttermilk, and butter in a medium bowl. Add egg mixture to cornmeal mixture, and stir to combine.
Pour batter into prepared baking dish. Bake until golden and a toothpick inserted into center comes out clean, about 25 minutes. Let cool slightly in dish on a wire rack. Run a knife around edges of dish to loosen, and invert onto rack to cool completely.
Cornbread can be wrapped in plastic and stored at room temperature for up to 3 days. For dressing, let stand overnight, uncovered, to dry out before crumbling.