Melt 1/4 cup of butter and vegetable oil in the cast iron skillet in the warm oven
Using a whisk once adding the dry ingriedents mix them together
Add eggs and buttermilk and whisk vigorously
(if desire sweet cornbread) add the sugar and honey
Take heated cast iron skillet out of the oven and add the melted butter and vegetable oil to the mixing bowl of cornbread. Combine. It's ok if the oil gathers on the outside
Pour into the heated cast iron skillet and place in the oven.