Get ready for a wickedly good Halloween treat! These irresistible Rice Krispie Treats with fudgy brownies are topped with rich chocolate ganache and festive sprinkles for a deliciously fun dessert for your celebration.

These easy Rice Krispie Treats make the classic no-bake dessert even more irresistible with fudgy brownie chunks in every bite. They are buttery, chewy, crunchy, and chocolatey. The top is layered with a smooth chocolate ganache and finished with colorful Halloween sprinkles for a festive touch, making the perfect Halloween treat.
While they make the ultimate Halloween treat, these decadent bars are perfect for any time of year. You will want to bake a batch year-round—just swap out the Halloween sprinkles for whatever colors fit your holiday, game day, or celebration!
What you will love:
- Easy to make. It’s incredibly simple to prepare. The butter and marshmallows melt right on the stovetop, meaning there is absolutely no baking involved.
- Rice Krispies and brownie combination. This dessert gives you the best of both worlds. It’s chewy, gooey, buttery, crunchy, fudgy, and chocolatey all at once.
- Festive and party-ready. Decorate these treats with your favorite Halloween sprinkles, or easily switch them out for any occasion.


Ingredients needed:
- Salted Butter—Use high-quality butter for the best flavor. If using unsalted butter, simply add a pinch of salt to the melted butter and marshmallow mixture.
- Rice Krispies cereal—Both name-brand and generic cereals work perfectly and will turn out delicious.
- Premade brownies—Use store-bought brownies or bake your own ahead of time. Cut them into small chunks and freeze them before starting; this hardens the pieces so they don’t get mashed into the cereal.
- Semi-sweet chocolate chips—These add a rich layer of sweetness. You can also substitute dark or milk chocolate.
- Cream—Heavy cream, light cream, or half-and-half all work perfectly to create the smooth chocolate ganache.
- Vanilla—Adds a rich depth of flavor that makes these dessert bars truly irresistible.
Recipe highlights:
- Melt the butter over medium-low heat, then add the marshmallows.
- Remove from the heat. Add vanilla, then the Rice Krispies cereal. Stir to combine.
- Gently fold in the frozen brownie chunks.
- Transfer the mixture to a prepared pan. Press evenly into the pan without firmly packing it down.
- Microwave the chocolate chips and cream, stirring until smooth.
- Spread it over the Rice Krispie treats. Add sprinkles.
- Detailed instructions are in the recipe card section below.








How to store:
Refrigerating: Because the chocolate ganache contains cream, the bars can sit at room temperature for one day if the room is under 70° F. Refrigerate them in an airtight container for longer storage, up to 5 days. They become firm in the refrigerator. It’s best to let them come to room temperature before serving.
Freezing: To freeze, wrap each bar individually in plastic wrap, then place them in a freezer-safe container or freezer bag. Freeze for up to 2 months. Defrost the bars in their wrappers at room temperature before serving.
Pro tips:
- Use fresh marshmallows. Old ones are hard and don’t melt as well.
- Use the best-quality butter for the best flavor. Add a pinch of salt if you use unsalted butter.
- Avoid packing the Rice Krispies too firmly into the pan to keep the bars gooey. Packing it firmly will make the bars hard.
- Line the baking pan with parchment paper if you want to remove the entire batch from the pan.
- To prevent sticking when you press the Rice Krispie treat into the pan, coat your palm with melted butter or cooking spray.

Recommended supplies:
(Affiliate links. The products I recommend are either what I use, have on my wish list, or are highly rated.)
- Stockpot—this is a 5-quart ceramic nonstick pot with a glass top.
- Silicone spatula—for mixing, scraping, and cooking. This set of five various silicone spatulas is heat-resistant up to 500° F.
- Square baking pan— use an 8×8 for thick bars or a 9×9 pan for thinner bars.
- Small spatula and bowl for making the ganache.
You Might Also Like:
Rice Krispie Treats with Brownies
Description
Get ready for a wickedly good Halloween treat! These irresistible Rice Krispie Treats with fudgy brownies are topped with rich chocolate ganache and festive sprinkles for a deliciously fun dessert for your celebration.
Ingredients
Instructions
- Grease an 8×8 or 9×9-inch baking pan with cooking spray, a neutral oil, or melted butter (in addition to the ingredients listed above). Or line the pan with parchment paper.
- Melt the butter over medium-low heat, then add the marshmallows. Stir frequently until the mixture is completely melted and smooth.
- Remove the pan from the heat and add vanilla extract. Add the Rice Krispies and stir until the cereal is fully combined with the marshmallows.
- Gently fold in the frozen brownie chunks a handful at a time, distributing them evenly to avoid crushing or smashing the pieces.
- Pour the mixture into the prepared pan. Use a sturdy silicone spatula or greased hands to press the mixture evenly into the pan. Avoid packing it firmly, as over-pressing will make the Rice Krispie treats hard.
- Place the chocolate chips and 3 1/2 tablespoons of cream in a small, microwave-safe bowl. Microwave at 50% power for 30 seconds, then stir. Repeat this process once more for 20 seconds, then stir until the mixture is completely smooth.
- Spread the ganache evenly over the Rice Krispie treats, then top with sprinkles for a decorative touch. Allow the dessert bar to cool completely before slicing.
- Makes 9 servings.
If you prefer a thinner consistency, stir in the remaining cream. Be sure to warm it in the microwave first to prevent the chocolate from seizing.
Note:
- Because the ganache contains cream, you can store these treats at room temperature (70° F or below) for up to 24 hours. For longer storage, keep them in an airtight container in the refrigerator for up to 4 to 5 days
Disclosure: This site contains paid advertising and affiliate links. In Good Flavor is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

Nutella French Silk Pie
Fudgy Brownies Recipe (From Scratch)
Brownie and Things Baklava
Cream Cheese Heart Brownie Cups
