Ingredients
For the Cake:
* 1 cup unsalted butter, room temperature 2 sticks
* 1/3 cup vegetable oil
* 2 1/2 cups granulated sugar
* 3 cups sifted cake flour
* 6 large eggs room temperature
* 1 teaspoon baking powder
* 1/2 teaspoon salt
* 1 cup sour cream
* 2 tablespoons pure vanilla extract
For the Caramel Icing:
* 1 1/2 sticks butter
* 2 cans evaporated milk
* 2 cups granulated sugar
* 2 teaspoons pure vanilla extract
To the instructions