I make a peanut sauce that isn't quite as rich ...
mine is
~2 T. reduced sodium soy sauce
~2 T. honey
~2 T. red wine or cooking sherry (opt)
~1/2 c. water
1 T. peanut butter
garlic powder to taste
red pepper flakes to taste
~1 T. cornstarch to thicken
(needs to be cooked to thicken)
makes 2/3 - 3/4 of a cup
if you wanted the flavor more like the one listed, substitute rice vinegar for the honey, and use chili paste instead of red pepper flakes (to taste) and add cilantro ... maybe reduce the soy sauce
basically mine has less pb, more water, and is thickened with corn starch. And it makes a smaller quantity ... but proportionally has quite a bit less peanut butter in it. It's still a higher fat treat, MWL-wise, but for me, anyway, I find that the peanut butter adds that rich taste that I long for, but still isn't TOO bad for me, if it encourages me eat a giant heap of broccoli ... not that I don't like broccoli, just that I'm more likely to really enjoy eating veggies if I occasionally have a *treat* sauce on them.
Another option to look into is the PB2 product, which is essentially defatted peanut solids. You add 1 T. water to 2 T. of the PB2 stuff and it makes a much lower fat peanut butter spread ... that's all that's really in it. It doesn't taste JUST like peanut butter, to me, but it's just missing the peanut oil. Oh, I guess it does have a little sugar and salt added, but I think I read they were going to come out with one that didn't ... it does add some "peanutbutteriness" to sauces ...
here's a link if you're interested.
http://www.bellplantation.com/index.php ... &Itemid=35