I know I have gone on and on about how I prefer not to "hack" the Fuelings, and I still choose not to add stuff to them - I eat my five Fuelings plus my full Lean and Green every day.
HOWEVER, I was tired of seeing the Girl Scout cookies peanut butter patties on my counter, so this was my alternative. You mix a Brownie Fueling with 3T-4T of water, pour it into a silicone candy mold, top it with 2T of PB2 (prepared as directed)
It made eight heart shaped "candies" in this Wilton silicone mold.
They aren't really easy to eat when they're frozen, but once they soften enough to eat them, they're sticky and messy and it just seems like more work than it's worth for the benefit.
HOWEVER, the taste is worth it, if you're wanting that chocolatey-peanut buttery mix of flavors!
This isn't something I'll do often at all, but it was fun to try it and see that it does work.