
These M&M Rice Krispie Treats are a fun twist on a classic dessert with the perfect gooey texture and bursts of chocolate candy in every bite. Easy to make with just a handful of ingredients, they are great for snacks, parties, or whenever you want a nostalgic sweet treat that feels a little extra special.
I first made these for a kid’s birthday party and the colorful appeal was an instant hit. Now they are my go-to when I want an easy treat that feels festive and delicious.
Ingredients
- Mini marshmallows: A 10 ounce bag works perfectly for melting smoothly and providing that classic sticky sweetness
- Salted butter: Adds rich flavor that helps bind everything together and balances the sweetness nicely. Use good quality butter for best taste
- Pure vanilla extract: Brings warmth and depth to the marshmallow mixture, elevating the overall flavor
- Crispy rice cereal: The foundation of the treat offering the crunch and lightness you expect from traditional rice krispie treats
- Mini M&M candies: The star ingredient giving colorful chocolate bursts in every bite. Mini size distributes evenly and makes these treats visually fun
Instructions
- Sauté the Butter and Melt Marshmallows:
- Melt the butter in a large saucepan or heatproof bowl over medium heat or in the microwave. Add the mini marshmallows and gently heat, stirring every 15 seconds if using a microwave, until the marshmallows puff up and start to melt but still hold their shape. This ensures the perfect gooey texture.
- Stir in Vanilla Extract until Smooth:
- Remove the bowl from the heat and stir in the pure vanilla extract until the mixture is completely smooth and fully combined. This step adds flavor and helps meld everything together.
- Combine with Rice Cereal:
- Add the crispy rice cereal to the marshmallow mixture. Using a spatula or wooden spoon, fold the cereal into the mixture carefully but thoroughly until every piece is coated in the marshmallow.
- Incorporate Mini M&Ms Gently:
- Fold in the mini M&Ms into the mixture. Be careful not to overmix as the candy shells can start to crack. Save some mini M&Ms to sprinkle on top at the end for extra flavor and visual appeal.
- Press into a Prepared Pan:
- Butter or spray an 8x8 inch baking dish to prevent sticking. Transfer the mixture into the pan and press gently but firmly into an even layer. This step is key to keeping the treats compact but still light.
- Add Remaining Mini M&Ms on Top:
- Sprinkle the reserved mini M&Ms on top and press in lightly so they stick to the surface. Let the treats cool completely at room temperature to set.

The mini M&Ms are my favorite part because they add little pops of chocolate with just enough candy shell crunch. I remember making these with my siblings as a kid it was a simple recipe that made a big mess but even bigger smiles. Those colorful candies just brighten every bite and bring back warm memories.
Storage tips
Store these treats in an airtight container at room temperature for up to three days. If you want to save them longer, wrap tightly in plastic wrap or parchment paper and freeze for up to two months. Thaw at room temperature before serving for soft, chewy goodness.
Ingredient substitutions
If mini M&Ms are not available, regular size candies work but may not distribute as evenly. You can also swap the rice cereal for another crispy cereal you like though the texture will change slightly. For a chocolate twist, stir a quarter cup of unsweetened cocoa powder into the melted marshmallow before adding the cereal.
Serving suggestions
These treats are perfect on their own but can also pair beautifully with a cold glass of milk or creamy hot chocolate. Try them alongside fresh fruit for a fun dessert board or cut them into smaller bite size squares for parties and gatherings.

These M&M Rice Krispie Treats are quick to make and bring a cheerful, nostalgic treat to any occasion. Swap candy colors or add mix ins to customize for holidays.
Your Recipe Questions Answered
- → Can I use regular M&Ms instead of mini M&Ms?
Yes, regular M&Ms can be used, though mini M&Ms create a better distribution and texture in the bars.
- → What is the best way to melt the marshmallows?
Use a saucepan over medium heat or microwave in short 15-second bursts, stirring until puffed and smooth without overheating.
- → How should I store these cereal bars?
Store at room temperature in an airtight container for up to 3 days or freeze wrapped tightly for up to 2 months.
- → Can I add chocolate to the mixture?
Yes, adding ¼ cup unsweetened cocoa powder into the melted marshmallow mix creates a rich chocolate version.
- → What makes these treats soft and chewy?
Not over-heating the marshmallows and mixing in extra marshmallows near the end helps keep the texture gooey and soft.
- → Are there holiday variations?
Yes, using red and green mini M&Ms creates festive versions perfect for seasonal celebrations.