A confession: I cheated with this recipe. It's one of the very few recipes on Happy Herbivore that uses added fat. It calls for a bit of peanut butter, but I'm also including a variation for my chocolate lovers that is "fat-free."
The idea for these treats came haphazardly. James left a comment on HH's Facebook page asking for a pumpkin version of HH's black bean brownies. Since I created a whole-wheat, fat-free pumpkin-brownie recipe last year, I decided …

