The original recipe can be found on Let's Dish Recipes.
I adapted it slightly to use up some extra Hershey bars from s'more season and after doing the first batch realized I would halve the amounts of the peanut butter layer to make a more balanced bar. Also, I make it in a square Pyrex not the 9*13 that was originally recommended. This recipe is by no means a healthy recipe so it's best made when you know it will be shared. Otherwise (if you're like me) you'll just grab a piece every time you open the fridge.
1 cup graham cracker crumbs
1/2 cup melted butter
1/2 cup peanut butter (I spray the measuring cup with cooking spray so the pb slides out.)
1 cup confectioner's sugar
4 Hershey bars (1.55 oz bars) broken up into the squares
1 more large spoonful of peanut butter (roughly 2 TBS)
1. Melt the butter in a microwave or pan. In a bowl mix the melted butter, 1/2 cup of peanut butter, confectioner's sugar and graham cracker crumbs and stir until well mixed into a paste. Spray a square glass pan (9*9) with cooking spray then line the bottom with the paste. Even out the top so it is as smooth as possible.
2. In a microwave safe bowl heat the pieces of Hershey bar and the large spoonful of peanut butter until the bars are melt-y. Stir and put back in for a few more seconds if you feel like it's not smooth enough. Just be careful, burnt chocolate does not taste good! Spread the chocolate peanut butter mixture on top of the peanut butter layer and smooth out the top.
3. Put the pan in the fridge for at least 30 minutes. Cut into squares and eat with friends! Beware they are addictive! I have found that storage in the fridge is best but taking them out and setting them on the counter for 5 minutes makes them easiest to cut.
And yes I keep a fork & knife in the pan for ease of eating :) The fact that this many remain 4 days after I made them is a testament to my willpower.