Recipe for high protein, low calorie protein/peanut butter/oat bar

So, I've googled around for this, and haven't found exactly what I'm looking for...

Do any of you have a recipe for a yummy, lowish calorie, high protein homemade protein bar containing protein powder, peanut butter, and oats?

I mix up protein balls using chocolate protein powder, peanut or almond butter, whey crisps, oats, and whatever other mix-ins appeal (unsweetened coconut, whatever).

My blog has the base recipe here: http://www.vsggoodlife.com/2010/10/by-request-protein-ball-r ecipe.html  You can vary this recipe a lot - but changing the proportion of protein powder, oats and peanut butter may change the consistency a fair bit.

One thing to be aware of - there is no getting around the fact that peanut butter is a calorie dense food - I try to make the most of those calories by adding lots of protein in the form of the whey crisps and the protein powder, but this should be a replacement for a treat, rather than a staple, if keeping calories moderate is the goal. It is a calorically dense food, and actually not as filling as a few slice of chicken breast or other solid protein. I use them as a substitute when I am craving a cookie or some chocolate.

I usually form these into walnut size balls, rather than bars, keep them in the freezer and toss a couple into a ziploc for an afternoon treat.

Thanks!

Margo, have you tried it with PB2 instead of peanut butter, does/will it change the consistency too much, what do you think? Also did you experiment with any different protein powders (any to avoid) or were you just using the Champion Double Stack Chocolate protein powder, anyway.  

http://bellplantation.com/  PB2 specs; 2tbs=45 calories, 5g carbs and 5g protein.  (chocolate one is even tastier pre-op anyway)

I do use PB2 (defatted peanut butter flour) in other things, but the fat in the peanut butter is what sticks these together, so I've never used it in this recipe. I actually don't avoid fat at all, so I am just mindful of the calories that come along with it.

I have used all kinds of protein powder in this, but I only buy powders that are 23-30 gram protein (the higher the better for me) and less than 5gram carbohydrate per scoop. Champion has been my go-to for a good tasting chocolate protein since my surgery but the company has actually recently changed its formulation, so it now has less protein and more carbs, and I have now switched to Body Fortress or Allmax Isoflex for my chocolate and vanilla proteins.

I cheat and use Cliff MojoTrail Mix Bars :) I get box of 22 at Sam's Club for $17lbs.  I can't make my own for that much, they are organic/whole food ingredients, primarily.

I had a homemade oat bar thing at a women's expo thing, and they were yummy!  I am not much of a cook, but I really want to try my hand at a small batch of them :)

look up the poster Kellawanda.  she has a recipe i use all the time and is very satisfying for half a bar.  She has it posted on utube and it's really easy.  I sometimes add some dried cranberries to her recipe.