howtomakecerealtreats.com

  • recipes
    • fun party treats
    • holiday treats
  • cookbooks
  • about
  • subscribe
  • marshmallow conversion
  • traditional flavors
  • seasonal flavors
  • kid's cereal treats
  • FAQ
menu icon
go to homepage
  • recipes
  • cookbooks
  • about
  • marshmallows
  • subscribe
  • tips for making treats
  • traditional flavors
  • fun party treats
  • holiday treats
  • kid's cereal treats
  • seasonal flavors
  • vegan and gluten-free
subscribe
search icon
Homepage link
  • recipes
  • cookbooks
  • about
  • marshmallows
  • subscribe
  • tips for making treats
  • traditional flavors
  • fun party treats
  • holiday treats
  • kid's cereal treats
  • seasonal flavors
  • vegan and gluten-free
×
Home » Recipes » traditional flavors

Fluffernutter Rice Krispie Treats

Modified: Sep 21, '23 · Published: Sep 21, '23 · By: Beth Klosterboer · Commission earned on paid or sponsored links.

Jump to Recipe

These Fluffernutter Rice Krispie Treats combine all the flavors you love in the classic peanut butter and marshmallow fluff sandwich with a crispy and chewy cereal treat.

Fluffernutter Rice Krispie Treats.

If you love Fluffernutter sandwiches, you are going to go nuts over these peanut butter and marshmallow fluff rice crispy treats.

Each of these crispy and chewy cereal bars is drizzled with a creamy peanut butter fudge topping to enhance the peanut butter flavor.

This recipe idea came about because a reader asked if she could add peanut butter to our Marshmallow Fluff Rice Krispie Treats. I did some experimenting and found that simply adding peanut butter to that recipe did not work. The treats fell apart. Even adding more marshmallow fluff didn't work to keep the treats together.

a stack of Fluffernutter rice crispy treats.

I looked at other Fluffernutter Rice Krispie Treat recipes that are made using whole marshmallows but most people who make Marshmallow Fluff treats do so because they either don't have marshmallows on hand or they have someone in their family that can't eat sticky marshmallows.

If that isn't an issue for you then just make our Peanut Butter Rice Krispie Treats recipe. The treats are made with marshmallows instead of fluff and they are amazing!

Otherwise, use my solution. I took a tip from our Scotcheroos recipe and used corn syrup to hold these peanut butter marshmallow fluff treats together. The sweet syrup doesn't overpower the other flavors. It allows the peanut butter and marshmallow flavors to shine through.

Fluffernutter Rice Krispie Treats ingredients including light corn syrup, peanut butter, marshmallow fluff, and Rice Krispies cereal.

So, let's get into the kitchen and make some treats.

Ingredients

  • crisp rice cereal - We always use Kellogg's Rice Krispies Cereal to make our treats. The cereal has the best texture of all the cereals we have tried. Check out our Taste Test Results for more details.
  • marshmallow fluff or cream - You'll need one 7-ounce or 7.5-ounce jar of marshmallow fluff or marshmallow cream to make a pan of these treats. I've made this recipe with both size jars and either works fine.
  • light corn syrup - The corn syrup adds sweetness and holds the treats together.
  • peanut butter - Use your favorite brand of peanut butter. The flavor really shines through in this recipe. I have not made this recipe using natural peanut butter. If you try it, be sure to mix the peanut butter well before using it in the recipe.

Optional Topping

I added a delicious peanut butter fudge topping to my treats. You can skip it but I highly recommend adding it. Not only does this peanut butter fudge topping add more flavor but it also looks pretty when drizzled over the treats.

  • creamy peanut butter - To make the fudge topping, you'll need two tablespoons of creamy peanut butter.
  • Reese's Peanut Butter Chips - By melting the peanut butter chips and peanut butter together, you create a fudge that will firm up as it cools. It is soft enough to cut through but firm enough to hold its shape.
Rice Krispies cereal in a mixing bowl.

Instructions

Grease an extra-large mixing bowl with butter or baking spray and add 7 cups of Rice Krispies cereal to the bowl.

Also, grease a 9x13-inch pan and a silicone spatula or wooden spoon.

light corn syrup in a bottle and in a saucepan.

Pour ½ cup of light corn syrup into a saucepan and set it over medium heat.

boiling light corn syrup in a saucepan.

Bring the corn syrup to a boil then allow it to boil for 90 seconds. This will help to thicken in slightly.

remove the pan of boiling corn syrup from the heat.

Remove the pan from the heat and let it sit for 1 minute.

stirring creamy peanut butter into corn syrup.

Then, stir in the creamy peanut butter.

peanut butter and corn syrup stirred together.

Stir until well blended and smooth and creamy.

add marshmallow fluff to the melted peanut butter and corn syrup.

Add 1 cup of the marshmallow fluff and stir until combined.

pouring the mixture of peanut butter, corn syrup, and marshmallow fluff over a bowl of Rice Krispie Treats cereal.

Pour the peanut butter mixture over the Rice Krispies cereal.

a bowl of Rice Krispies cereal topped with the peanut butter mixture and marshmallow fluff.

Add the remaining marshmallow fluff to the bowl.

mixing Fluffernutter Rice Krispie Treats in a bowl.

Stir the thick peanut butter mixture into the cereal. You may need to mix it with your hands.

mixed Fluffernutter Rice Krispie Treats in a large mixing bowl.

Mix it until the peanut butter is blended but you still see some streaks of white marshmallows.

spreading the peanut butter marshmallow cereal treat mixture into a greased 9x13-inch pan.

Spread the Fluffernutter Rice Krispie treat mixture into a well-greased pan.

Fluffernutter Rice Krispie Treats spread into a 9x13-inch pan.

Gently press the cereal treat mixture into an even layer.

Reese's Peanut butter Chips and creamy peanut butter.

Combine ¼ cup of Reese's Peanut Butter Chips and two tablespoons of creamy peanut butter.

melted peanut butter and Reese's chips.

Heat on high power in the microwave for 20-second increments, stirring after each until melted.

piping peanut butter over a pan of Rice Krispie Treats.

Drizzle the peanut butter mixture over the cereal treats. I poured the mixture into a zip-top bag and piped it over my pan of treats.

pan of Fluffernutter Rice Krispie Treats drizzled with peanut butter.

Leave the pan of treats on the counter at room temperature for at least 2 hours until they cool completely.

peanut butter topped Fluffernutter Rice Krispie Treats bars.

Cut the treats into rectangles or squares using a serrated knife.

Tip

The peanut butter topping will be firm but not hard. It will be soft enough that it can be smashed if too much pressure is put on it, so don't press your hands onto the treats as you are cutting or you will smash the pretty peanut butter drizzles.

Storage

Store these treats at room temperature in an airtight container for up to 7 days.

You can package the treats in a single layer in gallon-size zip-top bags and freeze them for up to 3 months. Thaw the treats in the bag on the counter for at least one hour before removing them from the bag to keep condensation from forming on the treats.

Variations

  • Swap out cashew butter, almond butter, or sunflower butter for the peanut butter.
  • Use Nutella or Biscoff Cookie spread instead of peanut butter.
  • If you can't find peanut butter chips, you can use white chocolate chips instead. The topping won't be as intensely peanut buttery but will still have a nice peanut butter flavor.
  • Use chocolate chips and peanut butter to make a chocolate topping.

Related Recipes

If you enjoy making these Fluffernutter cereal treats, you might also enjoy these other treats made with peanut butter or nut butter.

peanut butter and honey rice krispie treats recipe image

Honey Peanut Butter Rice Krispie Treats

cashew rice krispie treats made with cashew butter and roasted and salted cashews

Cashew Butter Rice Krispie Treats

peanut butter and jelly rice crispy treats.

Peanut Butter and Jelly Rice Krispie Treats

Recipe

Fluffernutter Rice Krispie Treats.

Fluffernutter Rice Krispie Treats

Beth Klosterboer
Cereal treats with the flavor of a Fluffernutter sandwich made with peanut butter and marshmallow fluff.
Print Recipe Pin Recipe
Prep Time 15 minutes mins
Cook Time 5 minutes mins
Chill Time 2 hours hrs
Course Dessert
Cuisine American
Servings 16
Calories 238 kcal

Equipment

  • 1 extra-large mixing bowl
  • 1 9x13-inch baking pan
  • 1 silicone spatula or wooden spoon
  • 1 medium saucepan

Ingredients
  

  • 7 cups RK cereal
  • ½ cup corn syrup
  • 1 cup creamy peanut butter
  • 7 ounces marshmallow fluff

Optional Drizzle:

  • ¼ cup peanut butter chips
  • 2 tablespoons creamy peanut butter

Instructions
 

  • Grease an extra-large mixing bowl, a 9x13-inch pan, and a silicone spatula or wooden spoon with butter or baking spray.
  • Pour the cereal into the bowl and set aside.
  • Bring the corn syrup to a boil over medium heat. Let it boil for 90 seconds.
  • Remove the pan from the heat and let it sit for one minute before stirring in the peanut butter.
  • Add 1 cup of the marshmallow fluff and stir until blended.
  • Pour the mixture over the bowl of cereal.
  • Spoon the remaining marshmallow fluff on top.
  • Stir until combined with a few streaks of marshmallows not mixed in.
  • Pour into a buttered 9x13-inch pan. Spread into an even layer.
  • Heat the peanut butter chips and 2 tablespoons of peanut butter in a small bowl in the microwave for 20-second bursts of high power, stirring after each, until melted.
  • Pour the peanut butter topping into a zip-top bag and snip off one tip. Drizzle it over top of the Rice Krispie Treats.
  • Set aside to cool for at least 2 hours. Then cut into 16 rectangles or 24 squares.

Notes

Store your Fluffernutter Rice Krispie Treats in an airtight container for up to 7 days or package them in zip-top bags and freeze them for up to 3 months. Thaw them in the bag at room temperature for a few hours before removing the treats from the bag. 
Keyword Fluffernutter, marshmallow fluff, peanut butter recipes, rice krispie treats

More traditional flavors

  • chocolate caramel coconut Samoa Girl Scout cookies rice krispie treats
    Samoa Rice Krispie Treats
  • potato chip rice krispie treats stacked next to rippled potato chips.
    Potato Chip Rice Krispie Treats
  • Rice Krispie Treat chocolate chip cookies and a glass of milk
    Rice Krispie Treat Chocolate Chip Cookies
  • Snowflake Rice Krispie Treats decorated with blue and white chocolate.
    Snowflake Rice Krispie Treats

About Beth Klosterboer

Beth Klosterboer is a professional chocolatier, recipe developer, cookbook author, photographer, videographer, and event planner. She has owned and operated two retail confectionery stores from 1989 until 2001 and has been blogging since 2010. Beth creates fun food and delicious desserts for multiple websites and teaches chocolate-making courses for The Sugar Academy.
.
BUY ME A COFFEE - https://www.buymeacoffee.com/hungryhappenings

Please leave a comment. Cancel reply

Your email address will not be published. Required fields are marked *

Recipe Rating




Beth and Meaghan from How To Make Cereal Treats

Meet Beth and Meaghan. We are recipe developers, food photographers, and cookbook authors who love sharing creative cereal treat recipes with you.
Read more about us →

popular recipes

  • BEST Rice Krispie Treats Recipe You'll Ever Try!
  • marshmallow fluff rice kripsie treats with marshmallow cream showing inside the treats
    marshmallow fluff rice krispie treats
  • Fruity Pebbles Rice Crispy Treats
  • chocolate Rice Krispie Treats
    chocolate Rice Krispie Treats

Upcoming Holiday Recipes

  • New Year's Eve Rice Krispie Treats
    New Year's Eve Rice Krispie Treats
  • football Rice Krispie Treats on green napkin
    football Rice Krispie Treats
  • pink and red Rice Krispie Treat hearts for Valentine's day
    heart Rice Krispie Treats
  • shamrock Rice Krispie Treats for St. Patrick's Day
    shamrock Rice Krispie Treats

How To Make Rice Krispie Treats

  • collage of Rice KrispieTreats
    How to make Rice Krispie Treats FAQ
  • Bags of assorted Rice Krispie Treats and cereal treats stacked on a freezer shelf.
    How to Freeze Rice Krispie Treats
  • Marshmallows drawing with cute smiley faces.
    Marshmallows
  • cut Rice Krispie Treats using cookie cutters to make shapes
    Rice Krispie Treat shapes

Buy our cookbook

How To Make Cereal Treats cookbook image
Beth and Meaghan from How To Make Cereal Treats

Meet Beth and Meaghan. We are recipe developers, food photographers, and cookbook authors who love sharing creative cereal treat recipes with you.
Read more about us →

popular recipes

  • BEST Rice Krispie Treats Recipe You'll Ever Try!
  • marshmallow fluff rice kripsie treats with marshmallow cream showing inside the treats
    marshmallow fluff rice krispie treats
  • Fruity Pebbles Rice Crispy Treats
  • chocolate Rice Krispie Treats
    chocolate Rice Krispie Treats

Upcoming Holiday Recipes

  • New Year's Eve Rice Krispie Treats
    New Year's Eve Rice Krispie Treats
  • football Rice Krispie Treats on green napkin
    football Rice Krispie Treats
  • pink and red Rice Krispie Treat hearts for Valentine's day
    heart Rice Krispie Treats
  • shamrock Rice Krispie Treats for St. Patrick's Day
    shamrock Rice Krispie Treats

How To Make Rice Krispie Treats

  • collage of Rice KrispieTreats
    How to make Rice Krispie Treats FAQ
  • Bags of assorted Rice Krispie Treats and cereal treats stacked on a freezer shelf.
    How to Freeze Rice Krispie Treats
  • Marshmallows drawing with cute smiley faces.
    Marshmallows
  • cut Rice Krispie Treats using cookie cutters to make shapes
    Rice Krispie Treat shapes

Buy our cookbook

How To Make Cereal Treats cookbook image

Footer

↑ back to top

use policies

  • privacy policy
  • photo-use policy
  • terms of service

join us

  • Subscribe (newsletter)
  • our online courses

contact

  • contact
  • about us
  • FAQ

As an Amazon Associate, we earn from qualifying purchases.

Copyright © 2025 How To Make Cereal Treats