Oreo Rice Krispie Treats

Chewy Oreo rice krispie treats are filled with bits of cookies and cream! These easy treats are a hit with the whole family and are perfect for any special occasion. 

Once you get a craving for something, you often can’t get it out of your brain. 

I feel like that has been the case with rice krispie treats lately. My last batch of strawberry rice krispie treats didn’t last long, so I had to make another pan soon.

Close up of stack of Oreo rice krispie treats.

Oreos are some of our favorite cookies, so it was only natural that I’d need to tuck pieces of them into my next batch of chewy marshmallow squares!

These treats only require one extra step from the classic recipe, so they’re ready just as quickly.

Plus, you can use any Oreo flavor you like! Stick with the classic or mix it up depending on your favorites.

Ingredients for Oreo rice krispie treats

You’ll need:

Ingredients for Oreo rice krispie treats on a tile surface with labels.

Crispy rice cereal – You can use plain rice cereal, or go for a double chocolate flavor and get the cocoa krispies!

Measure the cereal into a bowl before melting the marshmallow to ensure you have the right amount and can mix them quickly.

Mini marshmallows – I prefer to use mini marshmallows in krispie treats because they melt quicker, and you can use additional unmelted marshmallows for more bits of marshmallow flavor.

Regular marshmallows will work as well, of course!

Butter – Butter helps keep the marshmallow from sticking to the pan as it melts.

Oreo cookies – I recommend using the classic Oreos. You can also swap in Golden Oreos if you don’t like chocolate.

Or, grab one of the special Oreo flavors for a different taste. Try them with whatever seasonal flavor is out!

Stack of Oreo rice krispie treats on a piece of brown parchment.

How to make this recipe

Coat a 9×13-inch baking pan with nonstick spray. For thick krispie treats, you can use a 9×9-inch square pan instead.

Break Oreos into small pieces. You don’t need to use a food processor to chop them; just use your hands to break into the desired size.

Melt the butter over low heat in a large saucepan or pot.

Once the butter is melted, add the marshmallows all at once. Stir to coat with the butter.

Melt, stirring occasionally and scraping any melted marshmallow up from the bottom over the top of the remaining marshmallows.

Once the marshmallows are completely melted and smooth, remove from heat.

Immediately pour in all of the rice cereal and stir until evenly coated. Make sure there are no loose cereal pieces or pockets of marshmallow.

Fold in the Oreo pieces until evenly distributed.

Scoop the mixture into the prepared pan. Grease your hand or a spatula and gently press the mixture into the pan so that it creates an even layer.

You don’t want to press too hard, so don’t worry if the mixture doesn’t reach fully into all the corners of the pan.

Let rest for about 1 hour to cool and firm up before slicing and serving.

Full pan of Oreo rice krispie treats.

Tips for making the best marshmallow treats

Make sure your marshmallows are fresh

Stale marshmallows don’t melt as well and can stick together in the bag. Look for marshmallows that easily separate from each other and bounce back quickly from a gently squish.

Turn the heat down

It can take a while to melt marshmallows, but resist the temptation to make it go quicker by raising the heat on the stove.

This can cause the marshmallows to melt too quickly, burning them before they are fully melted. Burnt marshmallow might be great for s’mores, but it won’t mix well into the cereal.

Work quickly

You don’t want the krispie treats to harden before they are fully mixed, so work quickly to mix together the cereal and marshmallow.

Use a sturdy silicone spatula to help you stir and unstick any bits from the sides.

Oreo rice krispie treat on a spatula set over the pan of treats.

Storage tips

Oreo rice krispie treats will keep in an airtight container, or wrapped tightly in plastic, for about 5 days, though they will be best within the first 2 days. 

Too much air exposure over time can dry them out quicker, so make sure to re-cover the treats each time you grab one!

Rice krispie treats can be frozen, individually wrapped very well in plastic and tucked into a freezer bag, for 3 months. Thaw at room temperature.

Overhead view of a stack of oreo rice krispie treats.

Get the kids in the kitchen and make a batch of these easy Oreo rice krispie treats today! Happy snacking!

Recipe card

Close up of stack of Oreo rice krispie treats.

Oreo Rice Krispie Treats

Course: Sweet Snacks
Cuisine: American
Prep Time: 10 minutes
Cook Time: 10 minutes
Total Time: 20 minutes
Servings: 24 servings
Author: Megan
5 from 38 votes
Chewy Oreo rice krispie treats are filled with bits of cookies and cream! These easy treats are a hit with the whole family and are perfect for any special occasion. 
Print Recipe Pin Recipe


  • 6 cups crispy rice cereal
  • 10.5 ounces mini marshmallows
  • 4 tablespoons butter
  • 15 Oreo cookies broken into pieces


  • Lightly coat a 9×13-inch baking pan with nonstick spray and set aside. Measure out the cereal into a bowl, and open the bag of marshmallows. Set both aside.
  • In a large pot set over low heat, add the butter and melt. Once melted, add the mini marshmallows and stir to coat with the butter. Stir frequently to melt the marshmallow.
  • Once completely melted and smooth, remove from heat and stir in the cereal all at once. Work quickly to stir and coat the cereal, leaving no loose bits of cereal or pockets of marshmallow. Stir in the Oreo pieces until evenly mixed.
  • Scoop the marshmallow mixture into the prepared pan. Lightly press down with a greased hand or spatula to reach to the edges of the pan; it's OK if it doesn't fully reach.
  • Let cool for 1 hour, then cut and serve. Store covered with plastic wrap, or in an airtight container, at room temperature.


Serving: 1g | Calories: 118kcal | Carbohydrates: 21g | Protein: 1g | Fat: 4g | Saturated Fat: 2g | Polyunsaturated Fat: 2g | Cholesterol: 5mg | Sodium: 91mg | Sugar: 11g

Nutrition information is an estimate based on online calculators and provided as a courtesy. Any nutritional information should be used as a general guideline only.

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