Remove the pot from the heat and gently fold in the Rice Krispies cereal until evenly coated with the marshmallow mixture.
Layer the Treats:
Spread half of the Rice Krispies mixture into a greased 9×13-inch pan. Press it down evenly using a greased spatula or parchment paper.
Add the Marshmallow Fluff and Graham Crackers:
Spread the marshmallow fluff over the Rice Krispies layer. Sprinkle the crushed graham crackers evenly on top of the fluff.
Top and Finish:
Spread the remaining Rice Krispies mixture over the graham cracker layer and press it down gently. Drizzle the melted chocolate chips over the top.
Chill and Serve:
Let the treats cool at room temperature for 30 minutes or refrigerate for 15 minutes. Slice into squares, drizzle with extra melted chocolate if desired, and serve!
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