Blackout Chocolate and Peanut Butter Cheerio Bars
If you’re searching for a delightful treat that combines the rich flavors of chocolate and peanut butter with the satisfying crunch of cereal, then look no further. Blackout Chocolate and Peanut Butter Cheerio Bars are an indulgent, no-bake dessert that will satisfy your sweet tooth and leave your taste buds dancing. These bars are perfect for parties, snack time, or even as a special treat for yourself. With a gooey marshmallow center and a chocolatey frosting, they are sure to become your new favorite dessert.
Why This Recipe is a Keeper

There are countless reasons to love Blackout Chocolate and Peanut Butter Cheerio Bars. First and foremost, they are incredibly easy to make. With just a handful of ingredients and simple steps, you can whip up a batch in no time. The combination of crunchy Chocolate and Peanut Butter Cheerios adds a unique texture while providing a delicious flavor that pairs perfectly with the sweet, creamy frosting. Plus, they are entirely customizable, allowing you to make them your own. Whether you prefer them chewy or crispy, this recipe can adapt to your preferences, making it a versatile addition to your dessert repertoire.
The Ingredient Lineup
To make these delectable bars, gather the following ingredients:
- 4 cups Chocolate and Peanut Butter Cheerios cereal – The star of the show, providing crunch and flavor.
- 1 cup mini marshmallows – Adds gooeyness and sweetness.
- 12 oz. chocolate – For the rich chocolate flavor; use your favorite variety.
- 2 teaspoons molasses – Adds depth and a hint of sweetness.
For the frosting:
- 12 tablespoons unsalted butter – The base for a creamy frosting.
- 1/3 cup malted milk powder – Gives a unique flavor and creaminess.
- 2 tablespoons unsweetened cocoa powder – Enhances the chocolatey goodness.
- 2 teaspoons vanilla extract – Adds a warm, aromatic flavor.
- 2 oz. semi-sweet chocolate, melted and cooled – For a rich chocolatey finish.
- 2 cups powdered sugar – Sweetens the frosting to perfection.
Gear Checklist
Before you start, make sure you have the following gear on hand:
- Large mixing bowl – For combining the cereal and marshmallows.
- Medium saucepan – To melt the chocolate and mix with molasses.
- 9×13-inch baking pan – Where your bars will set.
- Spatula – For spreading the mixture evenly in the pan.
- Mixing spoon – To stir the ingredients together.
- Double boiler or microwave-safe bowl – For melting chocolate.
From Start to Finish: Blackout Chocolate and Peanut Butter Cheerio Bars

Step 1: Prepare the Baking Pan
Start by greasing your 9×13-inch baking pan with a little butter or non-stick spray. This will ensure that your bars come out easily once set.
Step 2: Melt the Chocolate
In a medium saucepan, combine the 12 oz. chocolate and 2 teaspoons molasses. Heat over low heat, stirring frequently until melted and smooth. Remove from heat and let it cool slightly.
Step 3: Mix the Cereal and Marshmallows
In a large mixing bowl, add 4 cups of Chocolate and Peanut Butter Cheerios and 1 cup of mini marshmallows. Pour the melted chocolate mixture over the cereal and marshmallows. Stir gently until everything is well coated.
Step 4: Press the Mixture into the Pan
Transfer the cereal mixture into your prepared baking pan. Using a spatula or your hands, press down firmly to create an even layer. Make sure to pack it tightly so the bars hold together once set.
Step 5: Make the Frosting
In a clean mixing bowl, beat together 12 tablespoons of unsalted butter and 1/3 cup malted milk powder until creamy. Add 2 tablespoons of unsweetened cocoa powder, 2 teaspoons of vanilla extract, and the 2 oz. of melted semi-sweet chocolate. Mix until combined.
Step 6: Add Powdered Sugar
Gradually add in 2 cups of powdered sugar, mixing on low speed until fully incorporated and smooth. If the frosting is too thick, add a tiny splash of milk to reach your desired consistency.
Step 7: Frost the Bars
Spread the frosting evenly over the top of the pressed cereal mixture in the baking pan. Use a spatula to create a smooth layer.
Step 8: Chill and Set
Place the baking pan in the refrigerator for at least 2 hours to allow the bars to set. This will make cutting them into squares much easier.
Step 9: Cut and Serve
Once set, remove the bars from the pan by lifting them out using the edges of the parchment paper, if you used it. Cut into squares or rectangles and serve. Enjoy your Blackout Chocolate and Peanut Butter Cheerio Bars!
Customize for Your Needs
One of the best things about Blackout Chocolate and Peanut Butter Cheerio Bars is their versatility. Here are some ways to customize them:
- Mix in nuts such as chopped peanuts or almonds for added crunch.
- Add chocolate chips or peanut butter chips for an extra burst of flavor.
- Drizzle melted white chocolate on top for a beautiful presentation.
- Swap out the Chocolate and Peanut Butter Cheerios for your favorite cereal to create a new flavor profile.
Behind the Recipe
The inspiration for these bars comes from the classic rice cereal treats we all know and love. By using Chocolate and Peanut Butter Cheerios, we’ve given this nostalgic treat a fun twist. The addition of a rich chocolate frosting takes these bars to the next level, making them a delightful dessert or snack option. The combination of flavors and textures is sure to please both kids and adults alike, making them a hit at any gathering.
Refrigerate, Freeze, Reheat
These bars are perfect for making ahead of time. Here’s how to store them:
To refrigerate, simply place the cut bars in an airtight container and store them in the fridge for up to one week. If you want to keep them longer, you can freeze the bars. Just wrap them tightly in plastic wrap and then in aluminum foil, or place them in a freezer-safe container. They will last in the freezer for up to three months. When you’re ready to enjoy them, let them thaw in the refrigerator or at room temperature. There’s no need to reheat; they are delicious served cold!
Quick Questions
Can I use different types of cereal?
Absolutely! Feel free to experiment with your favorite cereals. Just make sure to choose a cereal that complements the flavors of chocolate and peanut butter.
Can I make these bars vegan?
Yes, you can substitute the butter with a vegan alternative and use dairy-free chocolate to make these bars vegan-friendly.
How do I know when the bars are set?
The bars are set when they feel firm to the touch and hold their shape when cut. Chilling them in the refrigerator is essential for this texture.
What if I don’t have malted milk powder?
If you don’t have malted milk powder, you can omit it or substitute it with additional powdered sugar or a bit of milk powder for a similar flavor.
In Closing
Blackout Chocolate and Peanut Butter Cheerio Bars are a delightful treat that brings together the best of chocolate, peanut butter, and crunchy cereal in one deliciously easy recipe. Perfect for any occasion, these bars are sure to impress family and friends alike. So, gather your ingredients, roll up your sleeves, and get ready to enjoy a sweet creation that you’ll want to make again and again!

Blackout Chocolate and Peanut Butter Cheerio Bars
Ingredients
Equipment
Method
- Step 1: Prepare the Baking Pan - Grease your 9x13-inch baking pan with a little butter or non-stick spray.
- Step 2: Melt the Chocolate - In a medium saucepan, combine the chocolate and molasses. Heat over low heat, stirring frequently until melted and smooth.
- Step 3: Mix the Cereal and Marshmallows - In a large mixing bowl, add the Cheerios and mini marshmallows. Pour the melted chocolate mixture over and stir gently.
- Step 4: Press the Mixture into the Pan - Transfer the mixture into the prepared pan and press down firmly.
- Step 5: Make the Frosting - In a clean bowl, beat together the butter and malted milk powder until creamy. Add cocoa powder, vanilla extract, and melted chocolate.
- Step 6: Add Powdered Sugar - Gradually mix in powdered sugar until smooth. Adjust consistency with a splash of milk if needed.
- Step 7: Frost the Bars - Spread the frosting evenly over the bars in the pan.
- Step 8: Chill and Set - Refrigerate for at least 2 hours to set.
- Step 9: Cut and Serve - Remove from the pan and cut into squares. Enjoy!
Notes
- Store cut bars in an airtight container in the fridge for up to one week.
- Freeze wrapped tightly for up to three months.
- For a vegan version, use dairy-free chocolate and a vegan butter substitute.
