Halloween Oreo Rice Krispie Treats

These festive Halloween Oreo Rice Krispie Treats are the perfect easy no bake dessert to make and share this Halloween season. Made with easy-to-find ingredients on the stovetop, this homemade rice krispie treats recipe is studded with colorful cookie sandwiches and sprinkles to make the ultimate Halloween dessert. Makes 12 krispie treats.

Need Halloween treats? You’ve got to check out Halloween Funfetti Cookies and Halloween Peanut Butter Chocolate White Chocolate Chip Cookies.

A stack of Halloween Oreo Rice Krispie Treats on wood

I’m sure you saw my Halloween Rice Krispie Treats shared last week, and I wanted to keep on this train.

This time, we’re throwing OREOS into the mix because, well, they’re absolutely delicious.

Instead of candy melts to decorate, we’re using Halloween chocolate sandwich cookies and black and orange sprinkles.

Why I love this recipe

If you like classic Rice Krispie treats, this recipe is for you! They’re exactly like the childhood favorite, but elevated.

They’ve got the fun addition of Oreos AND sprinkles.

Obviously, these are perfect for any Halloween festivities, whether you’re making them for your family, sharing them with friends or handing them out as a Halloween party treat.

As I’ve said in the past, I recommend making your treats in advance because they’re easy to make and keep.

This recipe is also fun to make with kids, too!

Depending on your child’s age and skill level, they can help with the making of the treats on the stovetop or the decoration. Either way, it’s sure to be a fun time.

Other Halloween recipes to make this year: Dessert Nachos) | Fizzy Potion Halloween Punch | Halloween Caramel Corn | Spiked Caramel Apple Cider | Melting Monster Halloween Punch

Got sweet teeth? Check out my Dessert Recipe Index for inspiration.

Ingredients for Halloween rice krispie treats in bowls

What you need to make this recipe:

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Let’s talk ingredients!

In addition to the tools above, you’re going to need some ingredients to make this recipe, too! Chances are, you might already have some of them in your fridge or pantry. Scroll down to the recipe card for the full measurements and instructions.

Here’s what you’ll need:

  • Crispy rice cereal—use your favorite brand! I’ve been known to make these with the whole wheat variety for my kids, but honestly, any variation is good.
  • Butter—you can use salted or unsalted butter. If using salted butter, don’t add the salt. If using unsalted butter, you need a little extra sprinkle of salt. I have more details about this below so you know how much to add, promise.
  • Marshmallows—mini marshmallows melt best and easiest! Make sure they’re fresh because older marshmallows will have lost some of their moisture and not melt as well.
  • Halloween Oreos—or your favorite Halloween chocolate sandwich cookie. I prefer the regular kind to the thins OR double stuffed.
  • Halloween sprinkles—I prefer jimmies for this recipe but you could use colored sugar or nonpareils if you have those on hand!
Collage showing how to crush cookies and them mixed with crispy rice cereal

How to make Rice Krispie Treats with Oreos and Sprinkles

Prepare the pan. I like using a 9”x13” baking dish and lining it with wax paper. This will make removing the crispy rice treats easy.

If you don’t have wax paper, simply spray your pan with nonstick cooking spray, and that’ll do the trick, too!

Pro tip!

Measure out the cereal into a large bowl, and set aside. We won’t be mixing these in the bowl, but I’ve found having them measured out before our marshmallow-butter mixture is melty makes your job easier when you’re supposed to be stirring everything together.

Smash the cookies in a plastic bag. Pour these on top of the cereal, and set them aside.

Melt the butter and marshmallows in a large pot over low heat with the salt. Stir until they have melted completely.

Mix the treats. Remove from heat, and pour the cereal and smashed/chopped Oreos into the pot with the marshmallow mixture. Stir quickly until the cereal and cookies are coated.

Make the bars. Pour the mixture into the prepared baking pan. Gently spread it into an even layer with a rubber spatula. If your spatula begins sticking, spritz with the nonstick cooking spray.

Do not press down hard on the mixture because this will make your treats more compact.

Add an even layer of sprinkles to the top of the treats, and let them cool for about an hour.

Cut into rectangles with a sharp knife, and enjoy!

Collage showing how to make Halloween Oreo Rice Krispie Treats

Erin’s Easy Entertaining Tips

I’m not saying you should host a Halloween party—but if you did, these Oreo Rice Krispie Treats would be a super cute, easy dessert to share with both kids and adults.

Why? They’re tasty, festive and fun!

If you’re planning to make them for a crowd, here are a few ideas on how to do that with less stress:

  • Double the recipe. If you’re sharing these with a lot of people, make two batches. Why not just make a double batch? Because you’ll need a giant pot for that.
  • Wrap them up individually. If you’re sending guests home with these, get some cute take-home bags* (affiliate link) and box these treats up to send home with your friends.
  • Serve them on a platter. One of my favorite ways to serve treats is on a big platter* (affiliate link). Let guests grab them when they want a treat. Be sure to have some festive napkins alongside the platter so they can have a place to set their treats!
Orange and black crispy rice treats on a wooden board with cookies and sprinkles

Frequently Asked Questions

Can I make these for a different holiday?

Sure! Since Oreos make so many seasonal varieties, feel free to take this idea and transform it into whatever holiday is happening soon! Swap out the cookies and the sprinkle colors, and have fun.

What can you use instead of marshmallows for Rice Krispie Treats?

Marshmallows are an integral part of krispie treats, so I do not recommend finding a substitute for them.

How long does it take for Rice Crispy Treats to harden?

The treats harden as they cool, so it’ll take at least 30 minutes after they’ve been in the pan.

Can you use old marshmallows for Rice Krispie Treats?

No. Please don’t. As marshmallows sit in the pantry, they lose moisture and their texture changes. They will have a harder time melting, and when they do, they will become more of a gelatinous blob. They run the risk of overcooking and making tougher krispie treats because you’ll need to cook them for longer.

Close up of a Halloween rice krispie treat with oreos and sprinkles

Quick Tips and Tricks for the best crispy rice treats

  • Swap out the Oreo and sprinkles for a different holiday. Yes, these were made for Halloween, but Oreos offer all kinds of seasonal cookies. Use those and your favorite sprinkles to make any type of seasonal treat.
  • Use fresh marshmallows. They melt more easily and will provide a better texture for your treats. (How do I know this? I’ve attempted this recipe with older marshmallows, and they didn’t turn out quite right.)
  • Make them gluten free by using GF Oreos (or other chocolate sandwich cookies) and GF crispy rice cereal. Be sure to read the labels.
  • Store in an airtight container at room temperature for 2-3 days. After this point, the treats will begin to harden.

Other no bake desserts to try:

A stack of Halloween Oreo Rice Krispie Treats on wood
Yield: 12 treats

Halloween Oreo Rice Krispie Treats

Prep Time: 10 minutes
Cook Time: 10 minutes
Cooling Time: 30 minutes
Total Time: 50 minutes

These festive Halloween Oreo Rice Krispie Treats are the perfect easy no bake dessert to make and share this Halloween season. Made with easy-to-find ingredients on the stovetop, this homemade rice krispie treats recipe is studded with colorful cookie sandwiches and sprinkles to make the ultimate Halloween dessert.

Ingredients

  • 6 cups crispy rice cereal
  • 18-20 Halloween Oreo Cookies
  • 6 tablespoons salted butter
  • 10 oz. mini marshmallows (about 6 cups)
  • 2 tablespoons black and orange sprinkles

Instructions

  1. Line a 9”x13” baking dish with wax paper. This will make removing the crispy rice treats easy. Set aside. Alternately, you can spray it with nonstick baking spray.
  2. Pour the crispy rice cereal into the large bowl, and set aside.
  3. Place the Oreos in a plastic bag and crush they are in until bite-sized pieces. Set aside.
  4. In a large pot, melt the butter over low heat.
  5. Once the butter has melted, stir in the marshmallows. Continually stir until completely melted.
  6. Pour the cereal and cookies into the marshmallow mixture, and stir quickly until the cereal is coated.
  7. Pour the cereal bar mixture to the prepared baking pan and gently spread the mixture into an even layer with a rubber spatula. (If the mixture begins sticking, spritz the spatula with the nonstick cooking spray.) Do not press down hard on the mixture, as your treats will be more compact.
  8. Add an even layer of sprinkles on top of the treats.
  9. Let the treats cool completely, about 30 minutes to an hour.
  10. Cut with a sharp knife, and enjoy within 2-3 days.

Notes

How to store: Store in an airtight container at room temperature for 2-3 days. After this point, the treats will begin to harden.

Make them for a different holiday. Simply swap out the Oreo and sprinkles. Oreos offer all kinds of seasonal cookies. Use those and your favorite sprinkles to make any type of seasonal treat.

While this recipe can be doubled to make more, you might have a challenge finding a pot that's large enough to be able to mix them all together.

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Nutrition Information:

Yield:

12 treats

Serving Size:

1 treat

Amount Per Serving: Calories: 270Total Fat: 10gSaturated Fat: 5gTrans Fat: 0gUnsaturated Fat: 2gCholesterol: 15mgSodium: 213mgCarbohydrates: 45gFiber: 1gSugar: 23gProtein: 2g

Nutrition facts are an estimate and not guaranteed to be accurate.

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