First, you're going to melt 1/2 cup of unsalted butter in a pan on the stove.
Once the butter is completely melted remove the pan from the heat. Add 2/3 cup of sugar, you'll remove the pan from the heat to ensure the sugar does not burn.
Then, add 2 large eggs and beat until they are thoroughly blended into the mixture.
Continue to stir your eggs in the mixture.
Next, add 1/2 teaspoon of baking soda, 1 cup of buttermilk, and continue to stir.
Now, pour of all those ingredients from the stove into a bowl.
Then, in that same bowl add 1 cup of cornmeal, and a 1/2 teaspoon of salt.
Add 1 cup of all-purpose flour.
Stir all these ingredients together, until they're virtually not lumps. Preheat your oven to 325 degrees.
Then, generously grease your 9 inch round pan with butter.
Pour in all your ingredients in your pan.
Once your pour in mixture, smooth out any lumps. Place your cornbread in the oven for about 30-45 minutes.