This is a test of commonsense. Complete the next sentence:

How to use cake flour 
Make a southern caramel cake. 
A southern caramel cake is a sweet cake made with layers of gooey and sweet. Serve this luscious southern caramel cake with tea and enjoy with your family or friends.
Preheat the oven to 350 degrees fahrenheit. Use a hand mixer to mix 1 cup of butter , 1/3 cup of vegetable oil, and 2.5 cups of granulated sugar in a large mixing bowl.