½ cup butter 2 cups sugar 4 squares bitter chocolate 2 egg yolks 1 teaspoon vanilla 2 ½ cups cake flour 2 teaspoons baking powder ½ teaspoon salt 1½ cups sweet milk 2 egg whites U.S. Supreme ...

Boxed cake mixes can definitely be hit or miss - but there's one decadent chocolate cake mix that doesn't miss. Here's why we ...