If you’re on the hunt for a dessert that combines the fudgy goodness of brownies with the irresistible crunch and peanut butter-chocolate magic of a classic snack, look no further than this Muddy Buddy Brownies Recipe. It’s the perfect blend of soft, rich brownie base topped with a luscious layer of peanut butter-coated cereal dusted in powdered sugar, creating a playful twist that’s guaranteed to delight both kids and adults alike. Whether for a festive occasion or just an indulgent treat at home, these brownies bring a fun texture and flavor combo that’s truly unforgettable.

Ingredients You’ll Need
Nothing complicated here—the ingredients are straightforward but crucial for achieving the perfect balance of fudgy richness and crunchy peanut butter goodness in your Muddy Buddy Brownies Recipe. Each component plays its part in flavor, texture, or that beautiful chocolatey appearance we all crave.
- Brownie mix (plus oil, eggs, water): The foundation of your dessert—a classic chocolate base that’s simple to prepare and always satisfying.
- Creamy peanut butter (1/2 cup): Adds that silky, nutty richness that perfectly complements the chocolate.
- Semi-sweet chocolate chips (1 cup): Melts smoothly to create the glossy chocolate coating for the cereal topping.
- Rice Chex cereal (1 1/2 cups): Provides a crisp crunch, balancing the chewy brownie texture beautifully.
- Powdered sugar (1/2 cup): A light dusting that brings sweetness and a delicate finishing touch reminiscent of the classic muddy buddy snack.
How to Make Muddy Buddy Brownies Recipe
Step 1: Prepare and Bake the Brownie Base
Start by preheating your oven to 350°F (175°C) and lining a 9×9-inch baking pan with either nonstick spray or parchment paper to ensure easy removal. Mix up your brownie batter according to the box instructions—typically this involves combining the mix with oil, eggs, and water—and pour it evenly into your prepared pan. Bake for the recommended time or until a toothpick inserted in the center comes out mostly clean. Let the brownies cool completely; this step is key to ensuring your topping sticks properly.
Step 2: Prepare the Peanut Butter Chocolate Mixture
While the brownies are cooling, grab a microwave-safe bowl and combine the semi-sweet chocolate chips with the creamy peanut butter. Heat the mixture in 30-second increments, stirring in between, until everything is smooth and fully melted. This velvety blend will become the adhesive that binds the cereal to your brownies.
Step 3: Coat the Cereal
Pour the Rice Chex cereal into a large mixing bowl, then drizzle the warm peanut butter chocolate mixture over it. Gently stir the cereal to coat every crunchy piece without breaking it up. Next, add the powdered sugar and toss until the cereal is evenly covered, creating that signature muddy buddy look and taste.
Step 4: Assemble the Final Layers
Once your brownies have cooled, spread the muddy buddy cereal mixture evenly over the top. Press down lightly so it adheres well, ensuring a perfect bite every time. To finish, place the brownies in the refrigerator and chill for at least 30 minutes to set before slicing and serving.
How to Serve Muddy Buddy Brownies Recipe

Garnishes
For an extra touch of indulgence, sprinkle some crushed peanuts or mini chocolate chips on top just before chilling. A light drizzle of melted white chocolate can add a beautiful contrast and make these treats even more irresistible.
Side Dishes
Pair these brownies with a scoop of vanilla or salted caramel ice cream for a dreamy dessert combo. If you want something lighter, fresh berries or a simple fruit salad offer a refreshing balance to the richness.
Creative Ways to Present
Cut the brownies into bite-sized squares and serve them on a decorative platter lined with parchment for parties or potlucks. You can also stack smaller pieces on skewers for a playful snack, or serve in individual ramekins layered with whipped cream for a deconstructed approach.
Make Ahead and Storage
Storing Leftovers
Keep any leftover Muddy Buddy Brownies Recipe in an airtight container at room temperature for up to 4 days. This keeps the brownie soft while maintaining the cereal topping’s crunch without becoming soggy.
Freezing
If you want to save some for later, wrap individual brownies tightly in plastic wrap and place them in a freezer-safe container or bag. They freeze well for up to 2 months—just thaw at room temperature before serving.
Reheating
While these brownies are best enjoyed chilled or at room temperature, you can briefly warm a piece in the microwave (about 10-15 seconds) for a soft, melty treat. Avoid overheating so the cereal topping stays crunchy and doesn’t get difficult to eat.
FAQs
Can I use a homemade brownie recipe instead of a mix?
Absolutely! Feel free to use your favorite brownie recipe in place of a box mix to personalize this dish. Just make sure your brownies are fully cooled before adding the topping.
Is it possible to substitute the Rice Chex cereal?
Yes, you can use other crispy cereals like Corn Chex or Crispix. Just choose one that has a neutral flavor and won’t overpower the peanut butter-chocolate coating.
Can I make these brownies nut-free?
To make a nut-free version, substitute the peanut butter with a seed butter like sunflower seed butter. The flavor will be different but still delicious, and great for allergy-conscious guests.
How long do Muddy Buddy Brownies last?
Stored properly in an airtight container, these brownies stay fresh for up to 4 days at room temperature. Beyond that, the texture and flavor might start to change, so enjoy them while they’re at their best.
Can I double the recipe for a larger crowd?
Yes, doubling the recipe is easy—just use a larger pan or two 9×9-inch pans and adjust baking time slightly if necessary. Be sure to keep an eye on the brownies as they bake to avoid over or undercooking.
Final Thoughts
There’s something truly joyful about the combination of fudgy brownies with that nostalgic, crunchy peanut butter cereal topping, and this Muddy Buddy Brownies Recipe captures that magic perfectly. It’s a crowd-pleaser that’s simple to make and endlessly fun to eat. Give it a try and watch these brownies become a beloved favorite in your dessert lineup!
