If you love cake-like brownies, these are for you! The buttermilk makes them extra special, too! Frosted Buttermilk Brownies Ingredients Cake 2 cups all-purpose flour 2 cups sugar 1 teaspoon baking soda 1/4 teaspoon salt 1 cup water 1 cup butter 1/3 cup unsweetened cocoa powder 2 eggs 1/2 cup buttermilk 1 1/2 teaspoons vanilla