- 1.5 cups cake flour • - 2 cups all-purpose flour • - 1.5 tablespoon salt • - 2 tablespoons corn starch • - 1/2 tablespoon baking soda • - 1.25 cups melted unsalted butter • - 1.25 cups brown sugar • - 1/2 white granulated sugar • egg • egg yolks • - 2 cups walnuts • chopped chocolate