So I just made the chocolate sheet cake from the Pioneer Woman Cooks blog. Wow. It's definitely worth it! There are several different processes going on to make it, but nothing in and of itself is very complicated. (To me it may have seemed like a lot, but I am used to dumping a cake mix in a bowl and a few other things and calling it good.)
Now, the reason it's so good is because it has gobs of butter in it. Almost a whole box. But, it's like the Julia/Julia movie says: anytime you taste something that's really good- it has butter in it! I borrowed her photo to tempt you into trying it. There are great instructions and more photos, so go take a look! I'm giving it five stars.