Preheat oven to 350.
Line a 9x9 pan with parchment paper.
Arrange graham crackers to cover bottom of pan.
Crush up a couple of additional crackers and sprinkle over crackers to cover seams.
Drizzle with along 4 tablespoons of melted butter.
Place in oven for 8 minutes.
Remove from oven and cover graham cracker base with 1 1/2 cups of chocolate chips.
Return to oven for 5 minutes.
Remove and set aside.
Add melted butter to a pan over medium heat.
Add 5 oz of marshmallows to pan and stir constantly until melted.
Add cereal and continute stirrring until well mixed.
Remove from heat and allow to cool for 3 minutes.
Grease hands by rubbing with butter.
Gently place krispie mixture over chocolate layer only pressing slightly when necessary.
Cover krispie layer with remaining 1/2 cup chocolate chips.
Cover chips with a layer of mini marshmallows.
Place pan in broiler on low for a few moments to lightly brown marshmallows (watch closely).
Top with broken pieces of chocolate bar for garnish.
Cut into squares to serve.