The chocolate mixture starts to cling to the cereal as soon as you fold it in, so I like to have the cocoa coating ready before I melt anything. That little bit of setup keeps the Rice Chex moving from the bowl to the bag without a scramble. These Hot Chocolate Muddy Buddies get their chocolate from a smooth peanut butter mixture, then pick up a second layer of cocoa and powdered sugar.
I keep the hot cocoa mix out of the melted chocolate and combine it with the powdered sugar instead. Shaking the coated cereal in that dry mixture gives every piece a familiar cocoa-dusted finish, while the mini marshmallows go in only after the cereal has cooled. You get crisp, chocolate-coated squares with soft little marshmallows tucked through the batch.
Kitchen Note
At 50% power, the mixture warms gradually, and each stir helps the chips melt evenly. I stop once it stirs smooth instead of adding extra microwave time just because a few chips still look intact.
Save these Hot Chocolate Muddy Buddies for a cocoa-dusted, chocolatey snack with mini marshmallows in every handful.
Why the Cocoa Mix Goes on the Outside, Not in the Melted Chocolate
The hot cocoa mix has a different job from the semisweet chips. The chips, peanut butter, and butter melt together into the coating that clings to the cereal. The cocoa mix is paired with powdered sugar and shaken on afterward, where it leaves a dry, cocoa-forward layer on the outside of each piece.
That order matters because the melted mixture is already rich and sticky; adding the cocoa mix there would change the texture of the chocolate coating. Keeping the cocoa and sugar dry also makes it easier to distribute them through the cereal in the bag. The result is a contrast between the smooth chocolate underneath and the soft, powdery coating on top. Mix the cocoa and powdered sugar together before the cereal goes into the bag, so there aren’t pockets of either one left behind.
What Gives These Muddy Buddies Their Hot Chocolate Flavor
- Rice Chex — The cereal’s light, crisp squares give the coating plenty of edges to cling to. Use fresh, crisp cereal; stale pieces won’t have the same crunch under the chocolate.
- Semisweet chocolate chips — Semisweet chocolate balances the sweet coating without making the whole batch taste like candy. A familiar grocery-store brand works well here; there’s no need to seek out specialty chocolate.
- Creamy peanut butter — Creamy peanut butter blends smoothly with the melted chocolate and butter, helping the mixture spread over the cereal without crunchy bits interrupting the coating.
- Unsalted butter — Butter loosens the chocolate mixture so it can coat the cereal. Unsalted butter keeps the added salt level predictable, and a standard store-brand stick works fine.
- Powdered sugar and hot cocoa mix — Powdered sugar gives the outside its soft, sweet coating, while the cocoa mix provides the hot-chocolate character. A regular powdered hot cocoa mix is the right kind here, rather than a liquid cocoa drink.
- Mini marshmallows — Their small size makes them easy to toss through the cereal for a little marshmallow in many bites. Keep them for the finishing toss instead of mixing them into the chocolate coating.
Coating the Chex Without Crushing the Pockets
Set Up the Cereal and Cocoa Coating
Measure the Rice Chex into a large bowl, about 6 quarts, so there’s room to fold without pressing down on the squares. In a separate 2-gallon resealable bag, combine the powdered sugar and hot cocoa mix. Having that dry coating ready before the chocolate mixture is made keeps the cereal moving smoothly through each stage.
Melt the Chocolate Mixture Gently
Combine the chocolate chips, creamy peanut butter, and unsalted butter in a microwave-safe bowl. Microwave at 50% power in 30-second intervals, stirring after each one, for 1 to 2 minutes total. When the mixture is smooth, stir in the vanilla extract. Don’t rush this part with full power; the lower setting gives you time to stir the ingredients together evenly.
Fold, Then Shake Until Coated
Pour the chocolate mixture over the cereal and fold gently until the pieces are evenly coated. Use a light lifting motion rather than stirring hard, which can break the cereal squares. Add the coated cereal to the bag with the powdered sugar and cocoa mixture, seal it, and shake until the pieces are well coated. If you see bare patches, keep shaking the sealed bag rather than pressing the pieces together by hand.
Cool the Coating Before Adding Marshmallows
Spread the cereal over a parchment-lined 18×13-inch rimmed baking sheet, giving the pieces room to cool. Let it cool for 20 to 30 minutes, then toss in the mini marshmallows. The parchment makes it easy to lift the set cereal from the pan, and waiting until the cooling time is up keeps the marshmallows from being mixed into the warm chocolate coating.
Easy Changes for Different Cocoa and Chocolate Notes
Make a dairy-free batch
Replace the semisweet chips with dairy-free semisweet chips and the butter with vegan butter, using the same amounts. Choose a dairy-free hot cocoa mix as well. The coating may set a little differently depending on the brands, but it still gives you the chocolate-and-cocoa combination.
Use sunflower seed butter instead
For a peanut-free version, replace the creamy peanut butter with the same amount of creamy sunflower seed butter. It keeps the chocolate mixture smooth, with a slightly earthier taste than peanut butter.
Lean into dark chocolate
Swap the semisweet chips for dark chocolate chips in the same amount. The chocolate layer will taste more intense and less sweet, while the hot cocoa and powdered sugar coating keeps the outside familiar.
Storage and Reheating
- Refrigerator: Store in an airtight container for up to 1 week; the cereal may lose some crispness in the fridge, so room temperature is preferable.
- Freezer: Freeze in an airtight freezer-safe container for up to 2 months. Thaw it while sealed at room temperature to limit condensation on the cereal.
- Reheating: No reheating is needed; serve at room temperature. Don’t microwave the finished mix, since that can soften the cereal and marshmallows.
Questions That Come Up While Making Hot Chocolate Muddy Buddies
Hot Chocolate Muddy Buddies
Ingredients
Equipment
Method
- Measure the cereal into a large bowl, about 6 quarts.
- Combine the chocolate chips, peanut butter, and butter in a microwave-safe bowl.
- Microwave at 50% power in 30-second intervals, stirring each time, for 1 to 2 minutes total, until smooth.
- Stir in the vanilla.
- Pour the chocolate mixture over the cereal and fold gently until evenly coated.
- Combine the powdered sugar and hot cocoa mix in a 2-gallon resealable bag.
- Add the coated cereal to the bag, seal, and shake until the pieces are well coated.
- Spread the cereal on a parchment-lined 18x13-inch rimmed baking sheet and cool for 20 to 30 minutes.
- Toss with the mini marshmallows.
