Real Deal Southern Caramel Cake

Name: Real Deal Southern Caramel Cake
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: Southern
Ingredients: 1/2 cup unsalted butter (1 stick, room temperature); 1/2 cup vegetable oil; 1 1/2 cups granulated sugar; 2 large eggs (room temperature); 2 large egg yolks (room temperature); 1 tablespoon pure vanilla extract; 2 3/4 cups cake flour; 1 1/2 teaspoons baking powder; 1 teaspoon kosher salt; 1/2 teaspoon baking soda; 1 1/4 cups sour cream (room temperature); 1/3 cup heavy whipping cream (room temperature); 3/4 cups salted butter (1 1/2 sticks); 24 oz evaporated milk (2 (12 oz cans)); 2 cup granulated sugar; 2 teaspoons pure vanilla extract