These Halloween Rice Krispie Treats are an easy, festive way to celebrate the season. Top them with seasonal sprinkles or fold in your favorite candies for extra fun.
I love simple treats that still look seasonal, especially ones my kiddo can help make. Rice Krispie treats are a go-to here because they come together quickly and can be customized for any holiday.
These Halloween Rice Krispie Treats are soft, marshmallowy, and finished with a layer of buttercream and bright sprinkles for a festive touch.
HOW TO MAKE HALLOWEEN RICE KRISPIE TREATS
These treats are perfect for making with kids. You only need crisped rice cereal, butter, and marshmallows for the base. I recommend mini marshmallows because they melt more evenly and give a consistently soft texture.
To give them a Halloween look, fold in a generous amount of seasonal sprinkles or add your favorite bite-sized candies.
For thick, bakery-style bars, use a 9×9-inch pan. If you prefer thinner squares, press the mixture into a 9×13-inch pan instead. Grease the pan and use a buttered spatula (or lightly buttered hands) to press the mixture in so it doesn’t stick.
Once cooled, spread or pipe a quick buttercream on top and finish with more sprinkles for a polished, festive look. If you prefer something lighter, drizzle melted white chocolate instead of a full frosting layer.
OTHER RICE KRISPIE TREATS VARIATIONS
There are lots of fun variations to try. Add pumpkin spice mix for fall flavor, brown butter for a deeper profile, or use flavored marshmallows like strawberry, chocolate, or birthday cake for a playful twist.
You can also top the treats with small candies—mini candy corn, Reese’s Pieces, or seasonal chocolate bits all make great accents.
STORING RICE KRISPIE TREATS
Rice Krispie treats are at their best the day they’re made, but stored in an airtight container they keep well for about 3 days. Remove excess air from bags to avoid sogginess from humidity.
If the treats become too firm, warm them for a few seconds in the microwave—be careful not to melt the frosting. You can also freeze individually wrapped treats (foil or wax paper) in a freezer-safe container for up to 3 months. Thaw at room temperature for at least an hour before serving.
If you want more Halloween ideas to pair with these treats, decorated sugar cookies and festive dirt cakes are fun options for parties or school events.
When you’re ready to serve, let frozen treats thaw at room temperature or enjoy room-temperature bars straight from storage for the best texture.
Halloween Rice Krispie Treats
Equipment
- 9×9-inch Cake Pan
Ingredients
- 6 tablespoons unsalted butter
- 2 packages mini marshmallows (10 ounces each), divided use
- 9 cups Rice Krispies cereal
- 1/3 cup Halloween sprinkles
- 1/2 cup unsalted butter (for buttercream), room temperature
- 1 1/2 cups powdered sugar, sifted
- 1 1/2 teaspoons pure vanilla extract
- 1–3 teaspoons milk (for frosting)
Instructions
- Line a 9×9-inch pan with parchment or foil and spray with nonstick spray.
- In a large saucepan, melt 6 tablespoons butter over low heat. Set aside 1 1/2 cups marshmallows. Add the remaining marshmallows to the pan and stir until melted. Remove from heat.
- Gradually add the Rice Krispies cereal, stirring until well coated. Fold in the reserved marshmallows and sprinkles.
- Press the mixture firmly into the prepared pan using a buttered spatula or lightly buttered hands. Cool completely before frosting.
For the Buttercream
- Beat 1/2 cup room-temperature butter on medium-high speed for about 5 minutes until creamy.
- With the mixer on low, gradually add sifted powdered sugar and beat until combined.
- Add vanilla and 1 teaspoon milk, mixing on low until incorporated.
- Beat on high until the frosting is smooth and fluffy, about 4–5 minutes. If too thick, add milk 1 teaspoon at a time to reach desired consistency.
- Spread or pipe the buttercream onto cooled cereal bars and top with additional sprinkles or candies.
Notes
Try decorating with mini candy corn, Reese’s Pieces, or other small candies for added color and texture.
For thinner treats, press the mixture into a 13×9-inch pan instead of a 9×9-inch pan.
Nutrition
Serving: 1 treat, Calories: 569 kcal, Carbohydrates: 101 g, Protein: 3 g, Fat: 19 g. Nutrition information is an approximation.
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