If you’re searching for a nostalgic treat that combines childhood favorites in the most delightful way, this Fluffernutter Rice Krispie Treats Recipe is about to become your new obsession. Imagine the crispy crunch of Rice Krispies cereal wrapped in a gooey, peanut buttery marshmallow embrace that’s enhanced by the irresistible sweetness of Marshmallow Fluff. This recipe effortlessly brings together soft, chewy textures with a satisfying crunch, creating a snack that’s perfect for any occasion and sure to bring a smile to anyone’s face.

Ingredients You’ll Need
To make these Fluffernutter Rice Krispie Treats, you won’t need a pantry full of fancy items—just a handful of simple ingredients that each play a crucial role in building that perfect flavor and texture balance. From creamy peanut butter to the iconic marshmallow fluff, every component adds its own magic.
- 6 cups Rice Krispies cereal: The star crispy component that gives these treats their classic snap and crunch.
- 6 tablespoons unsalted butter: Melts smoothly to bind everything together and adds a rich, buttery flavor.
- 6 cups mini marshmallows, divided: They melt down to a luscious goo helping everything stick while adding sweetness and chewiness.
- 1 cup creamy peanut butter: Brings the nutty, creamy element that sets these treats apart and delivers that classic fluffernutter taste.
- Pinch of salt (optional): Enhances all the flavors and balances the sweetness beautifully.
- 7.5 ounce container of Marshmallow Fluff: A fluffy, sweet spread that adds an extra layer of marshmallow goodness and creaminess.
How to Make Fluffernutter Rice Krispie Treats Recipe
Step 1: Prep the Pan
Begin by lining a 9×13 inch baking pan with parchment paper, making sure to leave some overhang on the sides for easy removal later. Grease the paper with nonstick spray so the treats won’t stick. This simple prep ensures your finished treats come out in perfect bars without a mess.
Step 2: Mix Rice Krispies
Pour 6 cups of Rice Krispies cereal into a large bowl. It’s best to have this ready before the marshmallow mixture is hot so you can combine everything quickly and evenly.
Step 3: Prepare Peanut Butter Marshmallow Mixture
In a saucepan over low heat, melt 6 tablespoons of unsalted butter. Once melted, add 4 cups of mini marshmallows and stir continuously until the marshmallows are completely melted and smooth. Take the pan off the heat, then stir in the creamy peanut butter and a pinch of salt if using. This warm, velvety mixture coats the cereal wonderfully and infuses the classic fluffernutter flavor into every bite.
Step 4: Combine and Add Fluff
Pour the peanut butter marshmallow mixture over the Rice Krispies in your bowl. Then add the entire container of Marshmallow Fluff along with the remaining 2 cups of mini marshmallows. Stir gently but thoroughly to combine everything—this ensures each crispy morsel is enveloped in a luscious, sticky coating packed with peanut butter marshmallow flavor.
Step 5: Set and Slice
Transfer the mixture to your prepared pan, pressing it down evenly using a spatula or clean hands lightly greased with butter to prevent sticking. Allow the Fluffernutter Rice Krispie Treats to set at room temperature for about 15 minutes so they firm up but remain soft and chewy. Once set, lift the parchment overhang and cut into 12 generous bars that are perfect for sharing (or savoring all by yourself!).
How to Serve Fluffernutter Rice Krispie Treats Recipe

Garnishes
If you want to elevate these treats visually and add extra layers of flavor, consider garnishing each bar with a drizzle of melted chocolate or a sprinkle of crushed peanuts for a contrasting crunch. You could also add a light dusting of powdered sugar to make them feel extra special for a party or holiday gathering.
Side Dishes
These treats shine best on their own or paired with a cold glass of milk, but if you’re setting up a dessert table, complement them with fresh fruit like sliced bananas or strawberries to cut through the richness. They also pair wonderfully with creamy vanilla ice cream for an indulgent twist.
Creative Ways to Present
Try cutting these into bite-sized squares and stacking them on a decorative platter for easy snacking. Wrapping individual bars in colorful wax paper or cellophane makes for cute party favors or lunchbox treats. For a fun twist, sandwich a scoop of marshmallow fluff or peanut butter between two bars for extra gooeyness.
Make Ahead and Storage
Storing Leftovers
You can keep any leftover Fluffernutter Rice Krispie Treats at room temperature in an airtight container for up to 3 days. Storing them this way ensures they stay soft and chewy without drying out or hardening.
Freezing
Want to save them for later? Wrap each bar individually in plastic wrap, then place them in a freezer-safe container or zip-top bag. They’ll keep well in the freezer for up to 2 months. When it’s time to enjoy, simply thaw at room temperature. This method is perfect for prepping ahead for parties or busy days.
Reheating
If you like your treats warm and melty, pop a bar into the microwave for about 10-15 seconds. Be careful not to overheat, as the marshmallow and peanut butter can get hot quickly. Enjoy your warm, gooey Fluffernutter Rice Krispie Treats just like fresh!
FAQs
Can I use crunchy peanut butter instead of creamy?
Absolutely! Using crunchy peanut butter will add a nice texture contrast that complements the marshmallows and cereal. Just keep in mind that it might make mixing a little trickier, but the crunch is totally worth it.
Is there a way to make these treats vegan?
Yes, you can substitute vegan butter and use a plant-based marshmallow alternative along with vegan Marshmallow Fluff versions. Just make sure your Rice Krispies cereal is vegan-friendly, and you’re good to go!
Why do I need to add salt to the mixture?
Salt enhances the flavors by balancing out the sweetness from the marshmallows and fluff. Even just a small pinch can make a big difference in depth and complexity of taste.
Can I add chocolate chips to the recipe?
Definitely! Stirring in some mini chocolate chips after combining everything can boost the flavor with melty pockets of chocolate, making these treats even more irresistible.
How do I prevent the treats from becoming too sticky?
Pressing the mixture firmly into the pan and allowing them to fully set before cutting helps reduce stickiness. You can also lightly grease your hands or spatula when flattening the mixture to prevent it from sticking.
Final Thoughts
This Fluffernutter Rice Krispie Treats Recipe is a true celebration of textures and flavors that feels like a hug in dessert form. Whether you’re making them for a casual snack, a party, or just a sweet pick-me-up, they’re guaranteed to bring a joyous, nostalgic smile to your face. So grab your ingredients and give these a go—you’ll wonder how you ever lived without them!
Print
Fluffernutter Rice Krispie Treats Recipe
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Total Time: 30 minutes
- Yield: 12 servings
- Category: Dessert
- Method: Stovetop
- Cuisine: American
Description
Deliciously gooey Fluffernutter Rice Krispie Treats combine the classic crispy cereal treat with creamy peanut butter and fluffy marshmallow creme for a nostalgic and irresistible dessert perfect for any occasion.
Ingredients
Cereal
- 6 cups Rice Krispies cereal
Marshmallow Mixture
- 6 tablespoons unsalted butter
- 6 cups mini marshmallows, divided
- 1 cup creamy peanut butter
- Pinch of salt (optional)
- 7.5 ounce container of Marshmallow Fluff
Instructions
- Prep the Pan: Line a 9×13 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal. Grease the parchment paper lightly with nonstick spray and set the pan aside.
- Mix Rice Krispies: Place all 6 cups of Rice Krispies cereal into a large mixing bowl to prepare for the marshmallow mixture.
- Prepare Peanut Butter Marshmallow Mixture: In a medium saucepan over low heat, melt 6 tablespoons of unsalted butter. Add 4 cups of the mini marshmallows to the melted butter and stir continuously until fully melted and smooth. Remove the pan from heat and quickly stir in 1 cup of creamy peanut butter and a pinch of salt if using.
- Combine Mixture: Pour the warm peanut butter and marshmallow mixture over the Rice Krispies cereal in the large bowl. Add the remaining 2 cups of mini marshmallows and the entire 7.5 ounce container of Marshmallow Fluff. Gently stir everything together until the cereal is evenly coated with the marshmallow mixture.
- Set: Transfer the mixture into the prepared baking pan. Using a spatula or your greased hands, press the mixture firmly and evenly into the pan to create an even layer. Allow the treats to set undisturbed at room temperature for 15 minutes.
- Slice and Serve: Once set, lift the treats out of the pan using the parchment paper overhang. Cut into 12 equal bars. Serve immediately or store in an airtight container.
Notes
- For easier removal, use parchment paper with enough overhang.
- Press the mixture firmly into the pan to help the treats hold their shape.
- Mini marshmallows can be substituted with regular marshmallows cut into smaller pieces.
- Add a pinch of salt to balance the sweetness if desired.
- Store leftover treats in an airtight container at room temperature for up to 3 days.

