Serves 16 to 20
Preheat oven to 375 degrees. Grease a 9-by-13-inch baking dish with softened butter.
Combine eggs, buttermilk, and melted butter in a large mixing bowl; whisk to combine. In another large bowl, add cornmeal, flour, baking powder, sugar, salt, and baking soda; whisk to combine. Add wet ingredients to dry ingredients and stir until just combined. Pour batter into prepared baking dish. Bake until top is golden brown and edges have pulled away from sides of pan, 30 to 40 minutes. Allow cornbread to rest for 5 minutes before cutting into squares and serving.