Both batter and frosting are made with cocoa in this chocolate lover’s delight. Not as rich as Texas Sheet Cake, the recipe is a good choice for a birthday chocolate cake, so you can still have room for ice cream! An interesting side note - the texture of the cake only improves with age, and it slices and serves better too! Make it a day or so ahead, cover well and refrigerate. Even several days later leftovers were wonderful.