These Muddy Buddy Bars are everything I love about the classic snack mix, but way easier to share. You get that same sweet chocolate-peanut butter coating clinging to crunchy cereal, all pressed into thick, fudgy bars you can slice and stack. I first made these for a bake sale at Liam's school, thinking they'd be simple enough to throw together the night before. They disappeared so fast I didn't even get one for myself.
If you're looking for a no-bake treat that feels nostalgic and tastes like childhood, these are it. They're also perfect alongside other no-fuss desserts like No Bake Peanut Butter Oatmeal Bars or Key Lime Pie Bars when you want something sweet without turning on the oven.
Why You'll Love These Muddy Buddy Bars
They come together in minutes. There's no baking involved, just melting, stirring, and chilling. You'll have these ready to slice in about an hour.
They taste exactly like the classic snack. That sweet, chocolatey, peanut buttery coating hugs every piece of cereal, and the powdered sugar on top gives you that signature muddy buddy finish.
They're fun to make with kids. Liam loves helping stir the cereal and dust the powdered sugar on top. It's a messy, giggly kind of recipe, and that's half the fun.
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Muddy Buddy Bars Ingredients
Here's what you'll need to make these no-bake Muddy Buddy Bars.
See Recipe Card Below This Post For Ingredient Quantities
- Rice Chex cereal: Forms the crunchy base of these bars and holds up well when coated without getting too soggy.
- Mini marshmallows: Melt into the chocolate mixture to create a sweet, gooey binding layer that holds everything together.
- Semi-sweet chocolate chips: Provide rich chocolate flavor without being overly sweet, balancing perfectly with the peanut butter.
- Peanut butter: Adds creamy, nutty richness and helps bind the chocolate mixture to the cereal.
- Salted butter: Enriches the chocolate mixture and balances the sweetness with a hint of salt.
- Vanilla extract: Enhances all the flavors and adds warmth to the chocolate-peanut butter coating.
- Powdered sugar: Dusted on top for that classic muddy buddy look and an extra touch of sweetness.
How to Make Muddy Buddy Bars
These Muddy Buddy Bars come together fast with just a few simple steps.
Prepare the pan: Line a 9×9-inch pan with parchment paper, leaving a 1-inch overhang on either side so you can lift the bars out easily later.
Add the cereal: Add 6 cups rice Chex cereal to a large bowl and set it aside while you make the chocolate mixture.
Melt the chocolate mixture: In a medium microwave-safe bowl, combine 1 ½ cups semi-sweet chocolate chips, ⅔ cup peanut butter, and 6 tablespoons salted butter. Microwave in 30-second increments, stirring between each one, until everything is smooth and completely melted.
Melt the marshmallows: Stir in 4 cups mini marshmallows and heat for another 45 to 60 seconds. Stir until the marshmallows are fully melted and the mixture looks glossy.
Add vanilla and coat the cereal: Stir in 1 teaspoon vanilla extract, then pour the warm chocolate mixture over the cereal. Stir gently but thoroughly until every piece of cereal is evenly coated.
Press into the pan: Transfer the cereal mixture to the prepared pan and spread it out as evenly as possible, pressing down lightly with the back of a spatula. Chill in the refrigerator for at least an hour, until firm.
Dust and slice: Once chilled, lift the bars out of the pan using the parchment overhang. Dust liberally with ⅓ cup powdered sugar, then slice into 12 bars.
Substitutions and Variations
Try almond butter or sunflower seed butter if you need a peanut-free option. The texture stays creamy and rich.
Use dark chocolate chips for a less sweet, more grown-up version. You can also mix in milk chocolate chips for a sweeter twist.
Add mix-ins like mini M&Ms, chopped pretzels, or toffee bits after coating the cereal for extra crunch and flavor.
Swap the Rice Chex for Corn Chex or even Crispix cereal. Both work beautifully and give you a slightly different texture.
Skip the powdered sugar if you want a cleaner finish, or use cinnamon sugar for a fun variation.
Equipment For Muddy Buddy Bars
- Microwave-safe bowl: You'll use this to melt the chocolate, peanut butter, butter, and marshmallows quickly and easily.
- 9×9-inch pan: This size gives you thick, sturdy bars that slice cleanly and hold their shape.
- Parchment paper: Lining the pan makes it so much easier to lift the bars out and slice them without any mess.
Storage and Make-Ahead Tips
Store these Muddy Buddy Bars in an airtight container at room temperature for up to 5 days. They stay chewy and delicious without drying out.
Refrigerate them if you want a firmer, fudgier texture. They'll keep for up to 2 weeks in the fridge.
Freeze for longer storage. Wrap individual Muddy Buddy Bars in plastic wrap, then place them in a freezer-safe bag. They'll keep for up to 3 months. Let them thaw at room temperature for about 20 minutes before eating.
Make them ahead for parties or bake sales. These actually taste better the next day once the flavors have had time to meld together.
Expert Tips
Use fresh marshmallows. Older marshmallows don't melt as smoothly and can leave you with lumpy spots in the coating.
Don't skip the chilling time. An hour in the fridge is key to getting bars that slice cleanly without falling apart.
Stir gently but thoroughly when coating the cereal. You want every piece covered, but you don't want to crush the cereal into dust.
Dust with powdered sugar right before serving if you're making these ahead. The sugar can absorb into the bars if it sits too long, and you'll lose that snowy finish.
Press the mixture firmly into the pan so the Muddy Buddy Bars hold together when you slice them, but not so hard that you crush the cereal.
Serving Ideas
Pack them in lunchboxes for a sweet treat that travels well and makes kids smile.
Serve them with a cold glass of milk for an after-school snack that hits the spot every time.
Stack them on a platter with other no-bake treats like Biscoff Brownies or Graham Cracker Crust desserts for an easy dessert spread.
Cut them into smaller squares and serve them at parties or game nights. They disappear fast.
FAQ
What are the ingredients for muddy buddies?
Traditional Muddy Buddies are made with Chex cereal, chocolate chips, peanut butter, butter, powdered sugar, and vanilla. These Muddy Buddy Bars use the same flavors but add marshmallows to bind everything into sliceable squares. Liam loves helping shake the powdered sugar on top.
How to make muddy buddy snack?
For the classic snack, you melt chocolate, peanut butter, and butter together, toss it with Chex cereal, then shake it all in a bag with powdered sugar. For these Muddy Buddy Bars, you melt marshmallows into the mixture, press it into a pan, chill, and slice. Both versions are delicious.
How to keep muddy buddies from getting soggy?
Store them in an airtight container and avoid adding the powdered sugar too early. Moisture is the enemy, so keep them sealed tight. For bars, chilling them in the fridge helps them stay firm and chewy instead of soft.
Is puppy chow the same as muddy buddies?
Yes, puppy chow and Muddy Buddies are the same thing. It's a regional name difference. Some people call it puppy chow, others call it muddy buddies, but it's all the same sweet, chocolatey, peanut buttery cereal treat we love.
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Muddy Buddy Bars
Ingredients
Method
- Line a 9x9-inch pan with parchment paper, leaving a 1-inch overhang on either side.
- Add 6 cups rice Chex cereal to a large bowl.
- Add 1 ½ cups semi-sweet chocolate chips, ⅔ cup peanut butter, and 6 tablespoons salted butter to a medium microwave-safe bowl. Heat in the microwave in 30-second increments, stirring between each, until everything is smooth and completely melted.
- Stir in 4 cups mini marshmallows and heat for another 45-60 seconds. Stir until the marshmallows are fully melted.
- Stir in 1 teaspoon vanilla extract before pouring the chocolate mixture over the cereal. Stir until the cereal is evenly coated.
- Transfer the cereal mixture to the prepared pan and even it out as much as you can. Let the bars chill in the refrigerator for at least an hour, until the bars are firm.
- Before serving, remove the bars from the pan, dust liberally with ⅓ cup powdered sugar, and slice into bars.
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