01 -
Set your oven to 350°F. Butter up two loaf pans and dust with flour, or line with foil and spritz on some cooking spray.
02 -
Follow the cake mix instructions and get the batter ready. Pour evenly into the loaf pans.
03 -
Blend sour cream and cream cheese until silky. Stir in sugar, vanilla, and the egg. Spoon it on top of the cake batter, then swirl together.
04 -
Stick it in the oven for 30-40 minutes. A clean toothpick tells you it's done. Let it cool fully before anything else.
05 -
Cream together softened butter and cream cheese until smooth. Add powdered sugar, salt, and vanilla, then mix till it’s creamy. Use to frost the cooled cakes.