2 Boxes of White Cake mix
1 cup egg whites (I use boxed pastureized)
1 1/2 cup buttermilk
1 1/2 cup sour cream
2/3 cup vegetable oil
2 Tablespoons vanilla
Preheat oven to 350 degrees F.
Grease walls of 4 8 inch pans and line with rounds of parchment paper.
In a large bowl, whisk together egg whites, buttermilk, sour cream, vegetable oil and vanilla.
In another bowl fitted with paddle attachment, gently mix the dry cake mix to break up any clumps.
Add wet ingredients to dry and mix slowly till just incorporated then turn to medium speed and mix for about 2 mins more.
Divide into for pans, bang sharply on the counter to remove air bubbles and then cook for about 35 mins. Check for doneness with toothpick.