I am giving a mixed review on this recipe. Firstly, let me say that both my DH and Dad and Brother both thought it was just perfect the way it was. I found the marshmellow topping to lack in any real flavor (maybe more vanilla?) and didn't add much to the dish. My mom and I both found the peanut butter part to be too thick and would have been just as nice halfed. Other than that, while its easy to make, it is time consuming with the chilling times so I ended up making the brownie part the night before and the topping, let it sit in the fridge. Next morning I made the marshmellow and finished it. I might make this again, but adjust it slightly more to my taste.