Oh my gosh, ADD THE PEANUT BUTTER!! I warmed about 2 tablespoons of natural peanut butter in the microwave and added it to the butterball batter, and it tastes awesome! Might need to add a bit more stevia though; if you use regular peanut butter it'll probably be sweet enough on it's own, but beware - it has sugar in it.
Also, I added an egg this time. I think it gives it a more cookie-dough texture, and it definitely adds fat and protein. I might even add two next time; I love eggs. Eggs and butter are best friends.
Butter on, faithful readers!