Red Velvet Cake with Vanilla Cream Cheese Frosting Recipe... Red Velvet Cake with Vanilla Cream Cheese Frosting Ingredients [b]Red Velvet Cake:[/b] 1/2 cup unsweetened cocoa powder 2 1/2 cups flour 1 teaspoon baking soda 1/2 teaspoon salt 1 cup (2 sticks) butter, softened 2 cups granulated sugar 4 eggs 1 cup sour cream 1/2 cup