When my friend made these as part of my Christmas present, I thought they were some of the best bars I'd ever eaten! When I made them, however, they were pretty sub-par. I was so disappointed. It was tricky to get the bottom cake-layer just right, not underbaking, but not overbaking either, knowing that it was going to be put back in for an additional 2-3 minutes. I overbaked mine accidentally. I also had a hard time making the chocolate layer spread. No other reviewers mentioned it, so maybe it was just me. I think next time (and there definitely will be a next time!), I will add just a little milk to make it more spreadable. I LOVED the flavor and texture of these bars, so I will have to practice making them again. Thanks for the recipe!