chewy Oreo rice krispie treats, Oreo marshmallow bars

If you love classic Rice Krispie treats and have a soft spot for Oreos, you’re about to meet your new favorite no-bake dessert: Chewy Oreo Rice Krispie Treats. These gooey, chocolatey, marshmallow-packed bars are everything a nostalgic dessert should be—simple, fast, and wildly addictive. With crushed Oreos folded into melty marshmallows and crispy cereal, each bite delivers the perfect balance of crunch and chew with a deep cocoa flavor that feels indulgent without being complicated.

Whether you’re making dessert for a party, a school bake sale, a holiday tray, or just a late-night sweet craving, this recipe checks every box. It’s beginner-friendly, requires no oven, and comes together in about 20 minutes. Even better? You can customize it endlessly—extra marshmallows, chocolate drizzle, white chocolate chips, peanut butter swirls, or holiday sprinkles all work beautifully here.

Let’s dive into everything you need to know to make the best chewy Oreo Rice Krispie treats you’ve ever had.

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Why You’ll Love These Chewy Oreo Rice Krispie Treats

There’s something magical about the combination of marshmallows and cereal. Add Oreos into the mix, and suddenly you’ve got a dessert that feels elevated but still comforting. Here’s why this recipe deserves a permanent spot in your dessert rotation:

• No baking required – perfect for hot days
• Ready in under 30 minutes
• Kid-friendly and party-approved
• Customizable with tons of mix-ins
• Uses simple pantry ingredients
• Ultra chewy, not dry or crumbly

These treats are thick, soft, and gooey in the center with just enough crunch from the cereal and cookie pieces.

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Ingredients

Use high-quality marshmallows and real butter for the best texture and flavor.

• 6 cups Rice Krispies cereal
• 20 Oreo cookies, roughly crushed
• 10 oz mini marshmallows (about 4 cups)
• 4 tablespoons unsalted butter
• ½ teaspoon vanilla extract
• ¼ teaspoon salt
• Optional: ½ cup extra mini marshmallows for topping
• Optional: ¼ cup chocolate chips or white chocolate drizzle

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Instructions

1. Prepare the Pan
   Line a 9×9-inch baking dish with parchment paper, leaving overhang for easy removal. Lightly grease the paper with butter or nonstick spray.
2. Melt the Butter and Marshmallows
   In a large saucepan over low heat, melt the butter. Add the mini marshmallows and stir constantly until completely melted and smooth.
3. Add Flavor
   Remove from heat. Stir in vanilla extract and salt. This small step makes a big difference in flavor depth.
4. Fold in Cereal and Oreos
   Add the Rice Krispies cereal and crushed Oreos to the marshmallow mixture. Gently fold until everything is evenly coated.
5. Transfer to Pan
   Scoop the mixture into the prepared pan. Use a buttered spatula or wax paper to gently press into an even layer. Don’t press too hard or the treats will become dense.
6. Add Toppings (Optional)
   Sprinkle extra marshmallows, crushed Oreos, or drizzle with melted chocolate while still warm.
7. Cool and Slice
   Let set at room temperature for 20–30 minutes. Lift out using parchment and cut into squares.

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Pro Tips for Ultra Chewy Results

• Use low heat when melting marshmallows—high heat makes them stiff
• Don’t over-press the mixture into the pan
• Fresh marshmallows = softer texture
• Let them cool naturally, not in the fridge

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Fun Variations

Cookies & Cream Deluxe
Add white chocolate chips and drizzle melted white chocolate over the top.

Peanut Butter Oreo Treats
Stir ¼ cup creamy peanut butter into the melted marshmallows.

Mint Chocolate Oreo Bars
Use mint Oreos and top with chocolate drizzle.

Holiday Oreo Krispie Treats
Add seasonal sprinkles for Valentine’s Day, Christmas, or Halloween.

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Serving Suggestions

• Serve with cold milk or hot cocoa
• Add to dessert boards or cookie trays
• Wrap individually for school lunches
• Stack on cake stands for parties

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Storage & Make-Ahead Tips

Store in an airtight container at room temperature for up to 3 days. For longer storage, wrap individual squares and freeze for up to 6 weeks. Thaw at room temp.

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Fun Food Fact

Rice Krispie treats were first created in the 1930s by Kellogg’s to raise money for Camp Fire Girls—and they’ve been a beloved American dessert ever since. Oreos? Introduced in 1912. Together? A legendary combo.

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Final Thoughts

These Chewy Oreo Rice Krispie Treats are the kind of dessert that disappears fast. They’re rich, nostalgic, and just fancy enough to feel special. Once you try them, you’ll never go back to plain cereal treats again.