Step 1

Preheat the oven to 425 degrees F (220 degrees C).

Step 2

Oil an 8-inch cast iron skillet. Heat in the preheated oven for 3 to 4 minutes.

Step 3

Whisk cornmeal, buttermilk, egg, oil, salt, baking powder, and baking soda together in a mixing bowl. Pour batter into the hot skillet.

Step 4

Bake in the preheated oven until golden brown, 20 to 25 minutes. Remove from the oven and transfer cornbread to a serving plate.