Print

Cookies and Cream S’mores Krispie Treats

Cookies and Cream Smores Krispie Treats - featured image

These Cookies and Cream S’mores Krispie Treats combine gooey marshmallows, crispy rice cereal, crushed Oreos, graham cracker crumbs, and chocolate for a nostalgic, crowd-pleasing dessert bar. Quick to make and endlessly customizable, they’re perfect for parties, potlucks, or a sweet snack at home.

Ingredients

Scale
  • 6 cups crispy rice cereal (e.g., Rice Krispies)
  • 4 cups mini marshmallows (plus extra for mixing in)
  • 1/4 cup unsalted butter, cut into pieces
  • 15 chocolate sandwich cookies (Oreos or similar), crushed
  • 1 cup graham cracker crumbs (about 8 full sheets, crushed)
  • 1 cup milk chocolate chips or chopped chocolate bars
  • 1/2 cup mini marshmallows (for folding in at the end)
  • 1/2 cup white chocolate chips, melted (optional, for drizzle)
  • Extra crushed cookies and graham cracker crumbs (for garnish)

Instructions

  1. Line a 9×13-inch pan with parchment paper, leaving an overhang for easy removal. Lightly grease or spray with nonstick spray.
  2. In a medium saucepan over low heat, melt butter. Add 4 cups mini marshmallows and stir constantly until smooth and gooey (about 3-5 minutes).
  3. Pour the melted marshmallow mixture into a large mixing bowl with crispy rice cereal. Add graham cracker crumbs and milk chocolate chips. Stir quickly to combine while warm.
  4. Gently fold in crushed chocolate sandwich cookies and 1/2 cup mini marshmallows. Mix until just combined.
  5. Transfer mixture to prepared pan. Press down firmly with a spatula, plastic wrap, or parchment paper for even thickness. Let cool for at least 30 minutes.
  6. Melt white chocolate chips in the microwave in 15-second bursts, stirring in between. Drizzle melted chocolate over the top, then sprinkle with extra crushed cookies and graham cracker crumbs.
  7. Once set, lift out using parchment overhang. Slice into bars and serve.

Notes

Work quickly after melting marshmallows as the mixture sets fast. For gooier bars, add extra marshmallows at the end. Use parchment paper for easy removal and a smooth finish. Gluten-free and vegan adaptations are easy—just swap ingredients as needed. Store in an airtight container at room temperature for up to 4 days, or freeze for up to 1 month.

Nutrition

Keywords: cookies and cream, s'mores, krispie treats, marshmallow bars, easy dessert, Oreo, chocolate, party snack, no bake, kid friendly