If you have a sweet tooth and a love for nostalgic treats, you are going to absolutely adore this Fluffernutter Rice Krispie Treats Recipe. Combining the gooey charm of marshmallows with rich peanut butter and the unique fluffiness of Marshmallow Fluff, these bars are a heavenly spin on the classic Rice Krispie treat that will bring smiles to everyone’s faces. Trust me, once you try this recipe, it’s going to become your new favorite snack for parties, lunchboxes, or just an anytime indulgence.

Ingredients You’ll Need
These ingredients are wonderfully simple but each plays a key role in creating the perfect balance of flavor, texture, and sweetness. From the crispy crunch of the Rice Krispies to the creamy depth of peanut butter, every element contributes to the magic.
- Rice Krispies Cereal: Provides that iconic, light crunch that makes every bite satisfying.
- Unsalted Butter: Adds richness and helps melt the marshmallows into a silky binder.
- Mini Marshmallows: Give gooey sweetness and help bind the treat together perfectly.
- Creamy Peanut Butter: Offers creamy, nutty flavor that complements the marshmallow sweetness.
- Pinch of Salt (optional): Enhances all the flavors, balancing the sweetness beautifully.
- Marshmallow Fluff: Adds an extra layer of fluffiness and the classic Fluffernutter signature taste.
How to Make Fluffernutter Rice Krispie Treats Recipe
Step 1: Prep the Pan
Start by lining a 9×13 inch baking pan with parchment paper, making sure to leave an overhang on the sides for easy lifting later. Give the parchment a light spray with nonstick spray so your treats release effortlessly without any mess.
Step 2: Mix Rice Krispies
Pour 6 cups of Rice Krispies into a large bowl and set aside. This will be the crispy base that soaks up the heavenly marshmallow and peanut butter mixture.
Step 3: Prepare Peanut Butter Marshmallow Mixture
In a saucepan over low heat, melt 6 tablespoons of unsalted butter, then stir in 4 cups of mini marshmallows until the mixture is completely smooth and melted. Remove from heat and stir in 1 cup of creamy peanut butter until well combined. If you like, add a pinch of salt to balance the sweetness and boost the flavor.
Step 4: Combine Everything Together
Pour the warm peanut butter marshmallow mixture over the Rice Krispies cereal and stir gently to coat. Then add 7.5 ounces of Marshmallow Fluff along with the remaining 2 cups of mini marshmallows and fold everything together carefully. The fluff will add extra softness and that classic Fluffernutter taste everyone loves.
Step 5: Set the Treats
Press this luscious mixture firmly into the prepared baking pan. Don’t be shy here—pressing it down really helps the treats hold their shape. Let it set at room temperature for about 15 minutes until firm enough to cut.
Step 6: Slice and Serve
Once set, use the parchment edges to lift the whole slab out of the pan and place it on a cutting board. Slice into 12 generous bars and get ready to enjoy the perfect marriage of peanut butter richness and marshmallow fluffiness!
How to Serve Fluffernutter Rice Krispie Treats Recipe

Garnishes
For a little extra flair, consider sprinkling chopped peanuts or mini chocolate chips on top right after pressing them into the pan. A drizzle of melted chocolate or a light dusting of powdered sugar can also add a lovely finishing touch that makes these treats look as good as they taste.
Side Dishes
Fluffernutter Rice Krispie Treats make a fantastic sweet side when paired with fresh fruit like strawberries or apple slices. A cold glass of milk or a creamy hot chocolate is the perfect beverage companion, especially for chilly days when you crave comfort in every bite.
Creative Ways to Present
Why not cut these treats into bite-sized squares and serve them on colorful toothpicks for parties? Wrapping individual bars in wax paper tied with twine turns them into charming homemade gifts. You can also layer the mixture in small mason jars as a fun and portable dessert option.
Make Ahead and Storage
Storing Leftovers
If you have any leftover bars (which might be rare!), store them in an airtight container at room temperature. They should stay fresh and chewy for up to 3 days, making them perfect to prepare ahead for gatherings or snacks during the week.
Freezing
You can freeze these treats for longer storage by wrapping individual bars tightly in plastic wrap and placing them in a freezer-safe container. They freeze beautifully for up to a month. When you want a quick treat, just thaw at room temperature for about an hour.
Reheating
Since these treats are best enjoyed soft and chewy, reheating isn’t really necessary. But if you want to soften frozen bars, microwave them on low power for 10 to 15 seconds to bring back that gooey goodness without melting the whole treat.
FAQs
Can I use crunchy peanut butter instead of creamy?
Absolutely! Crunchy peanut butter will add a lovely texture contrast, making the Fluffernutter Rice Krispie Treats Recipe even more interesting. Just be sure to mix it well so it blends nicely with the melted marshmallows.
What if I don’t have Marshmallow Fluff?
While Marshmallow Fluff is key to the signature fluffiness and flavor, you can substitute with an equal amount of extra mini marshmallows melted down. The texture might be slightly different but still delicious.
Can I make these treats gluten-free?
Yes! Rice Krispies brand now offers gluten-free cereal versions, so just double-check your ingredients to keep the recipe safe for gluten sensitivities or celiac concerns.
Is it possible to reduce the sweetness?
You can try cutting down the marshmallows slightly or using natural peanut butter without added sugar. Adding a pinch more salt can also help balance the flavors if you find them too sweet.
How long do Fluffernutter Rice Krispie Treats last?
Stored properly in an airtight container at room temperature, these treats stay fresh for about 3 days. After that, they might start to dry out but are still tasty in a pinch.
Final Thoughts
Honestly, this Fluffernutter Rice Krispie Treats Recipe is such a delightful twist on a childhood classic, bringing together the best of crispy texture and fluffy, peanut buttery sweetness. It’s an easy recipe that makes an impact every time, perfect for sharing with family, friends, or just treating yourself to a little moment of pure joy. I can’t wait for you to try it and see just how addictive these treats can be!
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
Indulge in a nostalgic treat with these Fluffernutter Rice Krispie Treats, combining the classic crunch of Rice Krispies cereal with creamy peanut butter, melted marshmallows, and luscious Marshmallow Fluff. Perfectly gooey and easy to make, these bars are a delightful twist on traditional Rice Krispie treats, ideal for parties, snacks, or a sweet dessert.
Ingredients
Dry Ingredients
- 6 cups Rice Krispies cereal
- 6 cups mini marshmallows, divided
- Pinch of salt (optional)
Wet Ingredients
- 6 tablespoons unsalted butter
- 1 cup creamy peanut butter
- 7.5 ounce container 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, and lightly grease with nonstick spray. Set aside for later.
- Mix Rice Krispies: Place the 6 cups of Rice Krispies cereal into a large mixing bowl to prepare for combining with 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 and stir gently until fully melted and smooth. Remove the saucepan from heat, then quickly stir in 1 cup of creamy peanut butter and a pinch of salt if using. Pour this mixture over the Rice Krispies in the bowl. Next, add the 7.5-ounce container of Marshmallow Fluff and the remaining 2 cups of mini marshmallows, then stir everything together until well combined and evenly coated.
- Set: Transfer the mixture to the prepared pan. Using a spatula or your hands (lightly greased or sprayed), press the mixture evenly into the pan to ensure it holds together nicely. Let the treats set at room temperature for about 15 minutes until firm enough to cut.
- Slice and Serve: Once set, use the parchment paper overhang to lift the entire block out of the pan. Cut into 12 equal bars and serve immediately or store in an airtight container for later enjoyment.
Notes
- For easier cutting, let the treats cool completely and use a sharp knife, wiping it clean between cuts.
- Adding a pinch of salt enhances the peanut butter flavor but can be omitted if preferred.
- Store leftovers in an airtight container at room temperature for up to 3 days or freeze for longer storage.
- Use creamy peanut butter for the smoothest texture; chunky peanut butter will change the consistency.

