Preheat oven to 425 degrees

Pour oil into the bottom of a 10.5-inch cast iron pan, coating with a thin layer of oil

Place oiled skillet into oven while preheating

Mix together buttermilk and oil, adding salt and pepper to taste if desired

Once preheated, carefully remove the pan from the oven and pour a small amount of hot oil into the batter (a generous drop), mix

Pour batter into hot skillet

Bake for 18-20 minutes or until bottom is golden brown, then carefully flip

Bake additional 5 minutes

Slice and serve!