Fluffernutter Rice Krispie Treats Recipe
Introduction
Fluffernutter Rice Krispie Treats are a delightful twist on the classic cereal snack, combining creamy peanut butter and marshmallow fluff for an irresistibly sweet and chewy treat. Perfect for a quick dessert or an anytime snack, these bars are easy to make and sure to please both kids and adults.

Ingredients
- 6 cups Rice Krispies cereal
- 6 tablespoons unsalted butter
- 6 cups mini marshmallows (divided)
- 1 cup creamy peanut butter
- Pinch salt (if your peanut butter doesn’t have any)
- 7.5 ounce container of Marshmallow Fluff
Instructions
- Step 1: Prep a 9×13 baking pan by lining it with parchment paper, letting the edges hang over the sides, and then spray the paper with nonstick spray. Set aside.
- Step 2: Pour the Rice Krispies cereal into a large mixing bowl and set aside.
- Step 3: In a medium saucepan, melt the butter over low heat. Add 4 cups of mini marshmallows and stir frequently until melted and mostly combined — it’s okay if it’s not fully smooth.
- Step 4: Turn off the heat and stir in the peanut butter until combined. If your peanut butter is unsalted, add a pinch of salt at this stage and mix well.
- Step 5: Immediately pour the peanut butter mixture into the bowl with the Rice Krispies. Add the Marshmallow Fluff and the remaining 2 cups of mini marshmallows, then stir gently to coat everything evenly.
- Step 6: Transfer the mixture into the prepared baking dish and press it down into an even layer. To press evenly, you can use the bottom of another 9×13 pan, spray your hands with nonstick spray and press with your palms, or place parchment paper on top and press down.
- Step 7: Let the treats set for at least 15 minutes to firm up. Once set, slice into 12 large bars and enjoy!
Tips & Variations
- Use creamy peanut butter for the best texture; natural peanut butter can make the treats crumbly.
- For extra flavor, try adding a teaspoon of vanilla extract to the melted butter mixture.
- To make it nut-free, substitute the peanut butter with sunflower seed butter or another nut-free spread.
- If you like a bit of crunch, stir in chopped peanuts or pretzels before pressing the mixture into the pan.
Storage
Store the treats in an airtight container at room temperature for up to 3 days. For longer storage, keep them in the refrigerator for up to one week. Reheat gently in the microwave for a few seconds if you prefer them soft and warm.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use jumbo marshmallows instead of mini marshmallows?
Yes, you can use jumbo marshmallows by chopping them into smaller pieces so they melt evenly with the butter.
Why do some marshmallow mixtures get too hard when cooled?
This recipe balances the marshmallows with peanut butter and Fluff, creating a softer texture. Overheating the marshmallows or using too few can cause the treats to firm up too much.
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Fluffernutter Rice Krispie Treats Recipe
- Total Time: 20 minutes
- Yield: 12 large bars 1x
Description
Fluffernutter Rice Krispie Treats combine the classic crispy, chewy texture of Rice Krispie bars with the nostalgic flavors of peanut butter and marshmallow fluff, creating a rich, gooey, and irresistibly sweet snack perfect for any occasion.
Ingredients
Main Ingredients
- 6 cups Rice Krispies cereal
- 6 tablespoons unsalted butter
- 6 cups mini marshmallows (divided)
- 1 cup creamy peanut butter
- Pinch salt (if your peanut butter doesn’t have any)
- 7.5 ounce container of Marshmallow Fluff
Instructions
- Prepare the pan: Line a 9×13-inch baking pan with parchment paper, allowing the edges to hang over the sides for easy removal, then spray it lightly with nonstick spray. Set aside.
- Measure the cereal: Pour 6 cups of Rice Krispies cereal into a large mixing bowl and set aside.
- Melt butter and marshmallows: In a medium saucepan over low heat, melt 6 tablespoons of unsalted butter. Add 4 cups of mini marshmallows and stir frequently until they are melted and mostly combined. It’s fine if the mixture isn’t completely smooth.
- Add peanut butter and salt: Turn off the heat, then stir in 1 cup of creamy peanut butter. If your peanut butter is unsalted, add a pinch of salt now and mix well.
- Combine with cereal and fluff: Immediately pour the peanut butter mixture into the large bowl of Rice Krispies. Add the 7.5-ounce container of Marshmallow Fluff and the remaining 2 cups of mini marshmallows, and stir gently to fully coat and combine all ingredients.
- Press into pan: Transfer the mixture into the prepared baking dish. Press it down into an even layer using the bottom of another 9×13 pan, your hands (sprayed with nonstick spray), or by placing parchment paper on top and pressing with your palms for an even finish.
- Set and serve: Allow the mixture to set for at least 15 minutes at room temperature. Once set, lift the bars out using the parchment edges and slice into 12 large bars. Serve and enjoy!
Notes
- For easier mixing and pressing, work quickly while the marshmallow and peanut butter mixture is warm and pliable.
- Use nonstick spray or butter on your hands or spatula when pressing the mixture to prevent sticking.
- These treats store well in an airtight container at room temperature for up to 3 days.
- You can substitute crunchy peanut butter if you prefer added texture.
- Prep Time: 10 minutes
- Cook Time: 10 minutes
- Category: Dessert
- Method: Stovetop
- Cuisine: American
Keywords: Fluffernutter, Rice Krispie Treats, peanut butter, marshmallow fluff, no bake dessert, classic snack

