Add butter to a large pot and melt.
Add the bag of marshmallows and keep stirring until thoroughly melted and it looks like big ball of goo.
Add peanut and once almost done melting add a splash syrup. Continue stirring until its mixed and melted.
Remove heat add crispies, flax and help and stir until well mixed.
Line 13x9 pan with parchment paper and transfer to dish pressing evenly w rubber spatula
Place in the fridge for 1 hr. Remove and cut into squares.