3 cups all-purpose flour
1/3 cup cocoa powder
1 3/4 cups sugar
2 teaspoons baking soda
1/2 teaspoon salt
2 teaspoons white vinegar
2 teaspoons vanilla extract
2/3 cup vegetable oil
1 3/4 cups water
1 (16-ounce) container vanilla frosting
1/2 (16-ounce) container chocolate frosting
Directions1.Preheat oven to 350 degrees F. Coat a 9- x 13-inch baking dish with cooking spray.
2.In a large bowl, combine flour, cocoa powder, sugar, baking soda, and salt; mix well.
3.Add remaining ingredients except frostings. Beat with an electric mixer until smooth, then pour into baking dish.
4.Bake 30 to 35 minutes, or until a toothpick inserted in center comes out clean. Let cool.
5.Spread vanilla frosting over top of cake. In a small microwaveable bowl, heat chocolate frosting 10 seconds, or until pourable, the drizzle over white frosting in a crazy pattern.