Halloween Rice Krispie Treats with Oreos are no-bake, weeknight-fast, and kid-approved. They're perfect for parties, bake sales, or last-minute classroom treats. This Rice Krispie treats recipe mixes marshmallows, butter, crushed Oreos, candy corn, and festive sprinkles for a chewy, gooey bar you can press into a pan and slice in under an hour.
Craving more quick sweets for the season? Try our Halloween Brownie Bites, Caramel Corn, or this Halloween Snack Mix.
Halloween Rice Krispie Treats at a Glance 🔎
- 🕒 Prep Time: 10 minutes
- ⏱️ Cook Time: 5 minutes
- 🧊 Optional Chill: 20 minutes for clean edges
- 👥 Servings: 12 large or 16 small squares
- 🔥 Cook Method: No-bake
- 🍽️ Cuisine (or General Category): Party Dessert / Holiday Treats
- 👩🍳 Pair With: Hot chocolate, chocolate-covered pretzel rods, mummy Oreo pops
- ⭐ Difficulty Level: Easy
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We've made these for Halloween parties. Serve them in mini cupcake liners so kids can grab-and-go without sticky fingers. ~Jami
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Why We Love This Recipe
- Fast No-Bake Method: Melt, mix, and press. They're done in minutes.
- Party-Ready Texture: Soft, chewy bars with Oreo crunch and colorful sprinkles.
- Kid-Friendly & Portable: Easy to slice into thick squares or bite-size minis.
- Customizable: Swap mix-ins by season and theme.
Halloween Rice Krispie Treats Ingredients
A short list of simple pantry items makes these party bars easy any night of the week.
- Rice Krispies (or crisp rice cereal): We stick to classic crisp rice for the signature texture.
- Marshmallows: Mini melt faster, but any fresh bag works.
- Unsalted butter: Balances sweetness and helps the bars set cleanly.
- Vanilla extract & pinch of salt: A small boost that keeps the sweetness in check.
- Oreo cookies: Rough chop for visible chunks in every slice. Use chocolate-orange sandwich cookies for extra theme points.
- Candy corn & festive sprinkles: Color, texture, and instant Halloween vibes. Overmixing crushes the Oreos and melts the sprinkles, so fold gently.
A full ingredient list with exact measurements can be found in the recipe card below.
Substitutions & Variations
- Cereal: Use Cocoa Crisp Rice for a chocolate base.
- Oreos: Try chocolate sandwich thins for a lighter crunch, or swap with chopped chocolate wafer cookies.
- Presentation: Press into mini muffin tins or cut with pumpkin cookie cutters. Drizzle melted chocolate on top.
- Kid-Friendly: Let kids sprinkle the top and press gently with parchment.
How To Make Rice Krispie Treats with Oreos for Halloween
STEP ONE: Prepare the Marshmallow Base
Melt butter in a large pot over low heat. Add marshmallows; stir constantly until smooth and glossy. Off heat, stir in vanilla and salt.
STEP TWO: Prepare the Cereal Mixture
Add crisp rice cereal and fold in gently until evenly coated and shiny.
STEP THREE: Prepare the Mix-Ins
Gently fold in chopped Oreos, candy corn, and half the sprinkles. Mix until just combined so Oreo chunks stay visible.
STEP FOUR: Prepare the Pan and Topping
Press the mixture into a greased or parchment-lined 9×13-inch pan. Scatter reserved Oreos, candy corn, and sprinkles. Press lightly to adhere.
Cool for one hour (or chill 20 minutes) before slicing thick squares.
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Expert Tips for Success
👩🍳Jami's Pro Tips: Want to take this recipe to the next level? Check out my expert tips below for the best flavor, texture, and meal prep hacks!
✔️ DO Use a parchment sling to lift cleanly. A silicone spatula prevents sticking.
✔️ DO Keep the heat low since marshmallows burn fast.
✔️ DO Reserve toppings for the surface for a better look and texture.
❌ DO NOT Press too hard. It compacts the bars and makes them tough.
Storage
Store Halloween Rice Krsipie treats in an airtight container at room temperature for 3-4 days. For longer storage, wrap tightly and freeze up to one month, then thaw at room temperature. To refresh a slightly firm square, microwave 5-8 seconds to soften the marshmallow crumb without melting the toppings.
Recipe FAQs
Keep the heat low and avoid overmixing. High heat dries marshmallows and makes bars stiff instead of soft. Melt the butter and marshmallows slowly, stir just until glossy, and press gently into the pan to preserve that chewy texture.
Classic Rice Krispies or any crisp rice cereal works best. Generic brands are fine as long as they're fresh. Stale cereal makes dense, flat bars. Cocoa Rice Krispies add a chocolate variation perfect for Halloween.
Yes, but cut them in half for easier melting. Mini marshmallows melt more evenly, but large ones work fine when stirred continuously over low heat to avoid lumps or scorching.
Wait about one hour at room temperature, or chill for 20 minutes if you need clean, even edges. Letting them set helps the marshmallow mixture hold together without sticking to your knife.
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📖 Recipe
Halloween Rice Krispie Treats with Oreos
Equipment
- Large heavy pot
- Silicone spatula
- 9×13-inch pan
- Parchment paper
Ingredients
- 6 cups Rice Krispies cereal
- ½ cup unsalted butter (one stick)
- 18 ounces mini marshmallows
- ½ teaspoon vanilla extract
- pinch salt
- 14 Oreo cookies with orange filling roughly chopped (reserve a few for topping)
- ¾ cup candy corn
- 2 tablespoons festive sprinkles (reserve a few for topping)
Instructions
- In a large pot over low heat, melt the butter completely. Add all the marshmallows and stir constantly until smooth and glossy. Remove from heat and stir in vanilla and salt.
- Add Rice Krispies and stir until evenly coated. The mixture should look shiny and thick.
- Add crushed Oreos, candy corn, and half the sprinkles. Stir just until combined for visible Oreo chunks.
- Transfer to a greased 9x13-inch pan and gently press into an even layer. Scatter the reserved Oreos and sprinkles on top, then press lightly to adhere.
- Cool at room temperature for about one hour (or chill for 20 minutes for clean edges). Slice into thick squares.
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Video
Notes
- Cereal: Use Cocoa Crisp Rice for a chocolate base.
- Oreos: Try chocolate sandwich thins for a lighter crunch, or swap with chopped chocolate wafer cookies.
Jami Powell says
We love to switch these up for different seasons. Always a hit!