place your graham crackers in a medium bowl. pour your melted butter over the crackers and mix well with clean hands.
In another medium bowl mix your peanut butter, chocolate, and nuts.
in a medium baking pan, put half your graham cracker mixture and press over bottom of pan, then pour all your peanut , chocolate and nut mixture over bottom layer of graham cracker press and smooth out till even. then place all your mini marshmellows over top and even out.
then, place the other half of the graham crackers on top and smooth as evenly as possible. Bake at 350 f. for 16 to 20 minutes. take out and let rest to room tempeture. then chill for 30 minutes in the refrigerator . cut into bars and serve.