If you have a soft spot for nostalgic treats that combine ooey-gooey marshmallows with the nutty sweetness of peanut butter, then you absolutely must try this Fluffernutter Rice Krispie Treats Recipe. This delightfully chewy, crispy dessert is a perfect blend of classic Rice Krispie treats with a playful fluffernutter twist that takes the flavor to an entirely new level. Whether you’re making a simple snack for the kids or a cozy after-school treat, these bars hit all the right notes with their buttery richness, peanut buttery warmth, and that irresistible marshmallow pull. I promise, once you try these, they’ll become a staple in your recipe collection.

Ingredients You’ll Need
This Fluffernutter Rice Krispie Treats Recipe uses simple, everyday ingredients that come together to create magic. Each one plays a crucial role, from adding texture to building flavor — making this dessert both easy and unbelievably satisfying.
- 6 cups crispy rice cereal: The classic crunchy base that gives these treats their signature light and crispy texture.
- 1/4 cup unsalted butter: Adds rich, creamy flavor and helps the marshmallow mixture melt smoothly.
- 1 (10-ounce) bag mini marshmallows: The main gooey ingredient providing chewiness and sweetness.
- 1/2 cup creamy peanut butter: Brings that nutty, luscious fluffernutter flavor that makes these treats special.
- 1 teaspoon vanilla extract: A subtle boost of warm flavor to round out the sweetness.
- 1/2 cup mini marshmallows (optional, for topping): Extra marshmallows for a fun, fluffy finish on top.
- 1/4 cup peanut butter drizzle or melted peanut butter (optional, for topping): Adds a beautiful, tasty decoration that reinforces the peanut butter goodness.
How to Make Fluffernutter Rice Krispie Treats Recipe
Step 1: Prepare Your Pan
Start by greasing a 9×13-inch baking dish with butter or cooking spray and set it aside. This simple prep step ensures your treats come out easily when they’re done and keeps everything neat.
Step 2: Melt Butter and Marshmallows
In a large saucepan over medium heat, melt the butter. Then add the mini marshmallows, stirring constantly until they completely melt and the mixture becomes smooth and glossy. This is where the magic begins, as the marshmallows become the glue binding everything together.
Step 3: Incorporate the Peanut Butter and Vanilla
Next, stir the creamy peanut butter into your melted marshmallow mixture until fully combined. The peanut butter creates that classic fluffernutter flavor and adds richness that makes these treats unforgettable. Now take the pan off the heat and stir in the vanilla extract, enhancing the overall taste with a gentle, sweet aroma.
Step 4: Mix with Crispy Rice Cereal
Pour the marshmallow-peanut butter mixture over the crispy rice cereal in a large mixing bowl, then carefully stir until every piece of cereal is coated evenly. You want consistent coverage so every bite has balance — crunchy, chewy, and nutty in perfect harmony.
Step 5: Press into the Prepared Dish
Using a greased spatula or some wax paper, press the mixture firmly into your prepared baking dish. Pressing firmly is key to getting the treats to hold their shape without crumbling while keeping them dense and chewy. Smooth the top evenly for a beautiful finish.
Step 6: Add Optional Toppings
If you like, sprinkle extra mini marshmallows over the top and lightly press them into the surface for an inviting, fluffy look. To truly amp up the peanut butter experience, drizzle some melted peanut butter across the bars. This not only looks gorgeous but adds an extra layer of flavor.
Step 7: Let Them Set
Allow the treats to cool and set at room temperature for about 30 minutes. This cool-down step makes slicing easier and lets all the flavors meld perfectly together.
Step 8: Slice and Enjoy
Finally, slice into squares and get ready to enjoy the perfect fusion of peanut butter and marshmallow goodness that only the Fluffernutter Rice Krispie Treats Recipe can deliver.
How to Serve Fluffernutter Rice Krispie Treats Recipe

Garnishes
Adding a simple garnish can elevate the playful appearance of these treats. Sprinkle a few mini marshmallows or add a drizzle of melted peanut butter just before serving for that extra wow factor. For a little color, chopped peanuts or even rainbow sprinkles can bring a fun, festive vibe.
Side Dishes
Because these treats are rich and sweet, pairing them with something fresh and light works wonderfully. Try serving alongside fresh fruit slices like apple or banana, or a simple glass of cold milk to balance the sweetness and refresh your palate.
Creative Ways to Present
Get creative by cutting the treats into fun shapes using cookie cutters for birthday parties or themed events. Layering them with whipped cream or drizzling with chocolate sauce can transform these bars into an indulgent dessert centerpiece that delights both eyes and taste buds.
Make Ahead and Storage
Storing Leftovers
Once cooled, the Fluffernutter Rice Krispie Treats can be kept in an airtight container at room temperature for up to three days. This keeps them soft, chewy, and perfectly fresh for snacking at any time.
Freezing
If you want to make these treats in advance or save some for later, you can freeze them. Wrap individual squares tightly in plastic wrap and place them in a freezer-safe container. They’ll keep well for up to a month, making it easy to enjoy these bars whenever a craving strikes.
Reheating
Since these treats are best enjoyed fresh but can be a bit firm after refrigeration or freezing, you can gently warm them in the microwave for about 10 seconds to soften them back up. Just be careful not to overheat or the marshmallows will get sticky and lose their structure.
FAQs
Can I use crunchy peanut butter instead of creamy?
Absolutely! Using crunchy peanut butter will add a delightful textural element, giving the treats a little extra bite with peanut bits. Just be mindful that it might change the consistency slightly, but it’s a delicious twist.
Is there a way to make this recipe nut-free?
Yes! You can substitute the peanut butter with sunflower seed butter or soy nut butter to keep the creamy texture and nutty flavor while making it safe for those with peanut allergies.
Can I use a different cereal?
While crispy rice cereal is classic for Rice Krispie treats, feel free to experiment with other cereals like corn flakes or even Cheerios for a fun variation. Just keep in mind the texture and sweetness might change slightly.
How do I prevent the marshmallow mixture from sticking to my spatula?
Greasing your spatula lightly with butter before stirring or pressing the mixture helps prevent sticking and makes it easier to handle the gooey marshmallow mixture.
Can I add chocolate chips or other mix-ins?
You can definitely add chocolate chips, mini candies, or even chopped nuts to the mixture for added flavor and texture. Just fold them in gently after combining the cereal to avoid melting or clumping.
Final Thoughts
There is something truly special about the Fluffernutter Rice Krispie Treats Recipe that captures the spirit of childhood while delighting grown-up taste buds too. Its simplicity, comforting flavors, and irresistible texture make it a must-try for anyone who loves sweet treats with a nostalgic twist. So gather your ingredients, roll up your sleeves, and get ready to create smiles with every chewy, crunchy bite!
Print
Fluffernutter Rice Krispie Treats Recipe
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Total Time: 20 minutes
- Yield: 12 servings
- Category: Dessert
- Method: Stovetop
- Cuisine: American
Description
Delight in these gooey and nostalgic Fluffernutter Rice Krispie Treats, combining crispy rice cereal with melted marshmallows and creamy peanut butter for a sweet and satisfying snack. Perfect for parties or an easy dessert, these treats are topped with optional marshmallows and a peanut butter drizzle for an extra burst of flavor.
Ingredients
Main Ingredients
- 6 cups crispy rice cereal
- 1/4 cup unsalted butter
- 1 (10-ounce) bag mini marshmallows
- 1/2 cup creamy peanut butter
- 1 teaspoon vanilla extract
Optional Toppings
- 1/2 cup mini marshmallows (optional, for topping)
- 1/4 cup peanut butter drizzle or melted peanut butter (optional, for topping)
Instructions
- Prepare the baking dish: Grease a 9×13-inch baking dish with butter or cooking spray and set it aside to ensure the treats don’t stick later.
- Melt butter and marshmallows: In a large saucepan over medium heat, melt the butter. Add the mini marshmallows and stir continuously until they are completely melted and the mixture is smooth.
- Add peanut butter and vanilla: Stir in the creamy peanut butter until fully incorporated into the marshmallow mixture. Remove the pan from heat and mix in the vanilla extract for enhanced flavor.
- Combine with cereal: Quickly pour the marshmallow-peanut butter mixture over the crispy rice cereal in a large mixing bowl. Stir thoroughly to ensure every bit of cereal is evenly coated.
- Press into dish: Transfer the coated cereal mixture into the prepared baking dish. Use a greased spatula or wax paper to press and smooth the top evenly.
- Add optional toppings: If using, sprinkle the additional mini marshmallows over the top and gently press them into the surface to adhere.
- Drizzle peanut butter: Drizzle melted peanut butter over the top of the treats for an extra layer of flavor and richness.
- Let set: Allow the treats to cool and set at room temperature for about 30 minutes to firm up before slicing.
- Slice and serve: Once set, slice the treats into squares and serve immediately or store for later enjoyment.
Notes
- Use wax paper to press the mixture down to prevent sticking.
- Peanut butter drizzle can be warmed slightly to achieve a pourable consistency.
- Store in an airtight container to maintain freshness for up to 3 days.
- For a nut-free version, substitute peanut butter with sunflower seed butter and check marshmallow ingredients for allergens.

