This post may contain affiliate links. For more information, read my disclosure policy.
These Oreo Rice Krispie Treats are the BEST cereal treat I’ve ever made – they’re soft and crunchy and have the perfect amount of Oreo flavor. I knew they’d be a delicious dessert but I didn’t realize what a crowd pleaser they would be – you MUST try this easy recipe!

There’s nothing like a classic Rice Krispie treats recipe (mine has brown butter and extra marshmallows), but I’m pretty good at making different flavors (like pistachio, Fruity Pebble, or banana pudding). Now? Now Oreo Rice Krispies Treats are my absolute favorite go to – I am pretty sure it’s the only one I’m going to crave from now on.
The gooey marshmallow treats mixed with the crunchy cereal and the Oreo cookie pieces – these are an epic sweet treat. That cookies and cream flavor doesn’t overpower the cereal and marshmallows, and the cookies add the perfect texture. If you’re an Oreo fan you MUST try these!
How to Make Oreo Rice Krispie Treats
- You’ll need Rice Krispies cereal (or a similar version, even flavored, like Cocoa Krispies). Make sure it’s fresh cereal (not stale).
- Fresh marshmallows (i.e. newly purchased) is also very important – newer marshmallows melt easier than older ones.
- I adapted my normal cereal treat recipe to account for the added chopped Oreos. You do not need to remove the cream from the cookies; just coarsely chop them.
- Use ANY flavor Oreo you want (Peanut Butter Oreos would be amazing) or any brand chocolate sandwich cookies.
- You can also melt everything in the microwave instead of on the stovetop – just stop every minute our so to stir.
- Press your crispy treats mixture into the prepared pan using a rubber spatula or your hands that have been sprayed with nonstick cooking spray – be careful since the mixture is hot. You can also use the empty butter wrapper for this!
- Let the treats cool a bit before slicing.
SAVE THIS RECIPE
Expert Tips
- Coarsely crush Oreos either using a rolling pin or sharp knife.
- Cereal bars last awhile – as long as their airtight they’ll be good for several days.
- Mini marshmallows melt faster and easier than large marshmallows, but you can use either.
Oreo Rice Krispie Treats Recipe
Recipe Video
Ingredients
- 6 cups Rice Krispies Cereal
- 20 Oreo Cookies (roughly chopped)
- 15 ounces mini marshmallows
- 8 tablespoons (113g) unsalted butter
- 1 teaspoon vanilla extract
Instructions
- Line a 9×13-inch pan with foil or parchment and spray with nonstick cooking spray.
- Measure out cereal and chopped cookies and place in a large bowl.
- Melt the butter in a large pot over medium low heat. Add the marshmallows and stir until melted. Remove from heat and stir in vanilla extract.
- Add cereal and chopped cookies and stir to coat with the marshmallow mixture. Pour into prepared pan. Press firmly to compact. Tip: spray wax paper with nonstick cooking spray so you can press without it sticking to your hands.
- Let set until firm then slice into bars. Store in an airtight container for up to 3 days. To freeze, let cool completely then cut into bars and wrap each individual bar in wax paper and freeze in an airtight container for up to 3 months.
Recipe Notes
Recipe Nutrition
Step-by-Step Photos
- Chop Oreos and measure out all ingredients before starting. Line a 9×13-inch pan with foil or parchment paper and spray with non-stick spray.
- Melt butter in a large saucepan over medium heat. Add marshmallows to the melted butter and stir until they’re gooey and melty. Then stir in vanilla extract.
- Add the cereal and chunks of Oreo cookies and stir, then press mixture into prepared pan.
- Let set then cut into squares.