Line a 9X11 pan with parchment paper.
Place graham cracker pieces to cover as much as possible.
Using a double boiler, melt half of the bag of chocolate chips.
Once melted, smear the chocolate all over the first layer of graham crackers.
In a large pot, heat butter at medium heat until it is melted then add all the marshmallows.
Once the marshmallows have melted down, remove from the heat and stir in the rice cereal.
Lay out a piece of parchment paper on a flat surface and spray lightly with cooking spray. Pour the rice krispie mix onto the parchment paper and form it into a rectangle.
While the rice krispie mix cools, heat the other half of the chocolate chips.
Lay the rice krispies on the first layer of chocolate and graham crackers. Then smear the melted chocolate on the rice krispies and top with another layer of graham crackers.
Keep the rice krispie s’mores in a cool place or the refrigerator so the chocolate can harden.
Cut up and enjoy!