Preheat oven to 400°. In a 12-inch cast-iron skillet, pour vegetable oil to a depth of ⅛ inch, and place skillet in oven to heat.
In a large bowl, whisk together flour and next 5 ingredients. Add buttermilk, eggs, and remaining ⅔ cup oil, stirring until well combined. Carefully pour batter into hot skillet.
Bake for 20 to 25 minutes or until a wooden pick inserted in center comes out clean. Let cool completely in skillet.
Notes
Kitchen Tip: Cornbread can be made up to 3 days ahead.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/smoked-sausage-cornbread-dressing-recipe/