I've now made these breakfast bars twice, and both times they were great! I didn't have any dark chocolate chunks either time, so I used semi-sweet chocolate chips instead.
The second time I made this recipe, I decided to try a mashed banana instead of the applesauce to add some banana-y flavor to the already great combination of peanut butter and chocolate. The blending of the three flavors is awesome. And if you haven't had a peanut butter and Nutella sandwich with slices of banana in between, you should go try that right now. It's great, as are these cookies, I mean, breakfast bars!