Halloween Oreo Rice Krispie Treats
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These Halloween Oreo Rice Krispie Treats are a fun and easy no-bake dessert made with just four simple ingredients! With crispy cereal, gooey marshmallows, and chunks of orange-filled Halloween Oreos, they’re perfect for Halloween parties, fall festivals, bake sales, or a last-minute sweet treat.
And the best part? You don’t need an oven, cookie cutters, or any fancy decorating skills. Just mix everything together, press it into a pan, and let it cool!
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Easy Halloween Oreo Rice Krispie Treats
I originally made these Oreo Rice Krispie Treats when I needed to bring something sweet to a get-together. Things were a little crazy around here, and I wanted something quick and easy. Rice Krispie Treats seemed like the perfect choice. (Who doesn’t love Rice Krispie Treats?)
While picking up the ingredients, I spotted the black and orange Halloween Oreos at the store and immediately knew they would be the perfect addition.
Of course, I had to sample a few Oreos before making the treats. You know, just to make sure they were good. (Hey, you never know when you might get a bad batch!)
The orange filling and dark chocolate cookies make these treats look festive for Halloween without having to do any extra decorating.
Why Make These Halloween Oreo Rice Krispie Treats?
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Only four main ingredients – Rice Krispies cereal, marshmallows, butter, and Halloween Oreos.
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No baking required – Everything comes together on the stovetop.
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Quick and easy – The mixture takes about 10 minutes to prepare, plus cooling time.
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Perfect for parties and bake sales – Make a batch in a 9×13-inch pan and cut it into squares for sharing.
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Festive without extra decorating – The orange Oreo filling adds a fun pop of Halloween color.
Ingredients for Halloween Oreo Rice Krispie Treats
You’ll find the full ingredient amounts and instructions in the printable recipe card below.
- Butter: You’ll need 3 tablespoons of butter or margarine to melt with the marshmallows.
- Mini marshmallows: Four cups of fresh miniature marshmallows make the gooey mixture that holds everything together. Mini marshmallows melt quickly and evenly.
- Rice Krispies cereal: Six cups of crispy rice cereal give the treats their classic crunch.
- Halloween Oreos: You’ll need 10 to 15 chopped Oreo cookies. The orange-filled Halloween Oreos give the treats their festive look. Set aside a few pieces to scatter over the top.
Good to Know: Freezing the Oreos
Freezing the Oreos before chopping them is one of my favorite little tricks for this recipe.
When I first made these treats, I was worried the extra creamy orange filling would squish out when I tried to chop the cookies. After about 1½ hours in the freezer, the filling had firmed up enough that I could easily cut the cookies into pieces. It’s a simple extra step, but it makes preparing the Oreos so much easier!
How to Make Halloween Oreo Rice Krispie Treats
1 Prepare the Oreos: Chop the Halloween Oreos into bite-sized pieces, reserving a small handful for the top. If you have time, freeze the cookies for about 1½ hours first to keep the orange filling from squishing out.
2 Melt the butter and marshmallows: In a large saucepan, melt the butter over low heat. Add the miniature marshmallows and stir until completely melted and smooth. If you like, stir in a small pinch of salt to balance the sweetness. Remove from the heat.
3 Combine the cereal and Oreos: In a large mixing bowl, combine the Rice Krispies cereal and chopped Oreos. Lightly coat a spatula with cooking spray, pour in the melted marshmallow mixture, and stir until everything is evenly coated. For extra gooey pockets, fold in an optional handful of unmelted mini marshmallows at the end.
4 Press into the pan: Lightly coat a 9×13-inch baking pan with cooking spray, or line it with parchment paper with a little overhang. Transfer the cereal mixture to the prepared pan and gently press it into an even layer. Scatter the reserved Oreo pieces over the surface and press them in lightly.
5 Cool and cut: Let the treats set at room temperature until firm enough to slice, about 30 to 60 minutes. If you used parchment, lift the slab out by the overhang. Cut into approximately 2-inch squares with a sharp knife lightly coated with cooking spray. Serve and enjoy!
💡 Pro Tip:
Use a lightly greased spatula and a gentle touch when pressing the mixture into the pan. Packing it too firmly can make the treats dense instead of soft and chewy.
Recipe Tips
- Keep the heat low. Melt the butter and marshmallows over low heat, stirring until smooth. Overheating marshmallows can make the finished treats firmer than intended.
- Use the stovetop. I recommend melting the butter and marshmallows in a saucepan instead of the microwave. When I originally made these, I found it difficult to get the marshmallows to melt properly in the microwave.
- Don’t pack the mixture too tightly. Gently press the cereal mixture into the pan. Pressing too hard can make the treats dense.
- Use cooking spray on your spatula. This makes it much easier to stir and press the sticky marshmallow mixture.
- Keep some larger Oreo pieces. Chopping the cookies into chunks rather than fine crumbs lets you see the dark cookies and orange filling throughout the treats.
- Use fresh marshmallows and cereal. Older marshmallows may not melt smoothly, and stale cereal won’t have the same crunch.
- Only have large marshmallows? Snip them into smaller pieces with kitchen shears so they melt more easily. For the most accurate swap, use the same weight of marshmallows.
- Try a pinch of salt. A little salt in the melted marshmallows can help balance the sweetness from the Oreos and any optional toppings.
- Use a parchment sling. Leave parchment extending over two sides of the pan so you can lift the set treats out for easier cutting.
- Cut clean squares. Let the treats set at room temperature, then use a sharp knife lightly coated with cooking spray.
Variations
There are so many fun ways to dress up these Halloween Oreo Rice Krispie Treats! Here are a few ideas if you want to change up the flavor or make them extra festive.
- Mini M&Ms or Chocolate Chips: Stir in a handful of mini M&Ms or semi-sweet chocolate chips for an extra chocolatey treat. Let the marshmallow mixture cool slightly first so the chocolate doesn’t melt completely.
- Extra Mini Marshmallows: Stir in a handful of unmelted mini marshmallows at the very end for extra gooey pockets throughout the treats.
- Chocolate Drizzle or Frosting: Drizzle melted white, milk, or dark chocolate over the finished treats. You can even tint white chocolate orange or purple using oil-based food coloring. Some people like to spread frosting over their Rice Krispie Treats, too. That’s a little too sweet for me, but it’s definitely an option!
- Halloween Sprinkles: Add orange-and-black sprinkles, candy pumpkins, or other festive Halloween decorations while the treats are still sticky.
- Monster Eyeballs: Press candy eyeballs in different sizes into the tops of the treats while they’re still warm. This is such a fun way to make them look like little Halloween monsters!
- Spiderweb Drizzle: Drizzle melted white chocolate in thin lines across the top to create a spiderweb effect. Add a candy spider for an extra spooky touch.
- Other Holidays: Use regular or seasonal Oreos and change the sprinkle colors to match the occasion, like pastels for Easter or red and green for Christmas.
Storage Suggestions
Store the cooled Halloween Oreo Rice Krispie Treats in an airtight container at room temperature for up to two days for the best texture.
If you’re stacking the treats, place parchment or wax paper between layers to keep them from sticking together. Refrigeration isn’t necessary and can make the treats firmer.
Frequently Asked Questions
Can I use regular Oreos instead of Halloween Oreos?
Yes! Regular Oreos will work in this recipe. You won’t get the festive orange filling, but you’ll still have delicious Oreo Rice Krispie Treats. You can also use seasonal Oreo varieties throughout the year.
Can I make these Halloween treats ahead of time?
Absolutely. Make them the day before your party and store them in an airtight container at room temperature.
Why did my Rice Krispie Treats turn out hard?
The most common reasons are overheating the marshmallows or pressing the cereal mixture too firmly into the pan. Melt the marshmallows over low heat, then gently press the treats into an even layer. Fresh marshmallows also help them turn out soft and chewy.
Do Oreo Rice Krispie Treats need to be refrigerated?
No. These treats are best stored at room temperature. Refrigeration can make them firmer and less pleasantly chewy.
Can I use large marshmallows instead of mini marshmallows?
Yes. Mini marshmallows are easiest because they melt quickly and evenly, but you can use larger ones. Cut them into smaller pieces with kitchen shears first to help them melt smoothly. If you’re substituting, use the same weight rather than the same number of marshmallows.
How long do Rice Krispie Treats need to cool before cutting?
Allow about 30 to 60 minutes at room temperature, or until the mixture is firm enough to hold its shape when cut. For tidy squares, lift the treats out using the parchment overhang and cut with a sharp, lightly greased knife.
Can I freeze Oreo Rice Krispie Treats?
Yes, although they’re best when fresh. Wrap the completely cooled squares well and freeze in an airtight container for up to two months, with parchment between layers. Let them thaw at room temperature. The texture may be a little less crisp afterward.
Can I use a different size pan?
Yes. A smaller pan will give you thicker treats, while a larger pan makes thinner squares. A 9×13-inch pan works well for this recipe. Whichever pan you choose, press the mixture gently rather than packing it down.
More Easy Halloween Treats
If you’re planning a Halloween party or just looking for something fun to make with the kids, you might also like these easy treats:
Did You Make These Halloween Oreo Rice Krispies?
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Print
Halloween Oreo Rice Krispie Treats
- Prep Time: 10 minutes
- Cook Time: 5 minutes
- Total Time: 1 hour
- Yield: about 24 squares 1x
- Category: desserts
- Method: stovetop
Description
These Halloween Oreo Rice Krispie Treats are made with just four ingredients! Loaded with orange-filled Oreos and gooey marshmallows, they’re an easy no-bake treat for Halloween parties, fall festivals, and bake sales.
Ingredients
- 3 tablespoons butter or margarine
- 4 cups miniature marshmallows
- 6 cups Rice Krispies cereal
- 10 to 15 Oreos, chopped
- Spray oil
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Instructions
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Chop the Halloween Oreos into bite-sized pieces, reserving a few for the top. For easier chopping, freeze the Oreos for about 1½ hours first.
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Melt the butter in a large saucepan over low heat. Add the mini marshmallows and stir until completely melted and smooth. Remove from heat.
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In a large bowl, combine the Rice Krispies cereal and chopped Oreos. Pour the melted marshmallow mixture over the cereal and stir until evenly coated.
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Lightly grease a 9×13-inch baking pan or line it with parchment paper. Transfer the mixture to the pan and gently press into an even layer. Sprinkle the reserved Oreo pieces over the top and lightly press them into the mixture.
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Let cool at room temperature for about 30 to 60 minutes, until set. Cut into approximately 2-inch squares and serve.
Notes
- For easier chopping: Freeze the Oreos for 1½ hours before cutting.
- For softer treats: Use fresh mini marshmallows, melt them over low heat, and avoid pressing the mixture too firmly.
- Optional additions: Add a pinch of salt to balance the sweetness, or fold in a handful of unmelted mini marshmallows for extra gooey pockets.
- For clean cuts: Use a sharp knife lightly coated with cooking spray.
- Storage: Keep in an airtight container at room temperature for up to two days for the best texture.
Nutrition
- Serving Size: 1 square
- Calories: 90
- Fat: 2
- Carbohydrates: 16
- Protein: 1
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Oreo Rice Krispy Treats are ALWAYS a good idea! Yum!
i stopped by from Frugal Crafty Blog Hop.
These look delicious!! Now I'll have to run out and get some Halloween Oreos!