homemade protein bars

Does anyone have a fabulous recipe for homemade protein bars? Apparently finding a decent recipe for these, that isn't alarmingly unhealthy, is close to impossible. I mean... if you're going to start off with a bunch of butter or cups of sugar... what's the point??

I did find this recipe and I think I'm going to give them a go. I'm a little wary of how much it's going to cost to buy everything because I don't already own any of the ingredients, but I really want to find a portable and tasty protein to eat for a quick breakfast or afternoon snack.