Fluffernutter Fudge

Fluffernutter Fudge is as fun to eat as it is to say! A rich peanut butter fudge tastes even better when you combine it with marshmallow cream and crunchy nuts.

Fluffernutter Fudge: easy to make peanut butter fudge with marshmallow and peanuts!

I don’t know if I’ve ever confessed this before, but peanut butter isn’t my favorite ingredient. I enjoy an occasional peanut butter treat, like Peanut Butter Bars or Peanut Butter Rice Krispie Treats but there are other flavors I prefer.

Peanut Butter Fudge

This fudge though? This is good enough to change my opinion on peanut butter desserts. The creamy fudge combined with an occasional chewy marshmallow and crunch of peanuts…oh my!

I’m usually all about covering my peanut butter desserts with melted chocolate, folding in chocolate chips or finding some other way to add chocolate to the treats. Not this time. The peanut butter and marshmallow stand on their own.

My kids agreed that this spin on peanut butter fudge is made extra delicious thanks to all the marshmallows you fold in! We polished off the whole pan within a day. . .and I’m already craving it again.

You NEED to try Fluffernutter Fudge at least once. Trust me on this!

What is a fluffernutter?

Wondering where this silly sounding name came from? This peanut butter fudge gets its name from a Sandwich I used to eat as a kid. Did you ever have a fluffernutter in your lunch box?

One slice of white bread with peanut butter + one slice covered with marshmallow fluff = a Fluffernutter sandwich. It might not be the healthiest of school lunches but it was such a treat!

Nowadays, that’s a bit more sweetness than I want in my sandwiches. It’s the perfect amount for a rich fudge recipe though!

Peanut Butter Marshmallow Fudge Recipe

Along with being eyes-rolling-back-into-my-head levels of tasty, Fluffernutter fudge is so easy to make too.

Okay, yes, the instructions do involve a candy thermometer. Don’t be scared! You don’t need to be some kind of candy making genius. Follow the steps and you’ll be just fine.

As far as ingredients go, you need light corn syrup, milk and sugar along with mini marshmallows and peanut butter. Oh, and don’t forget the peanuts for that little bit of CRUNCH factor!

How to Make Fluffernutter Fudge

Here’s how to make your own addictively scrumptious homemade peanut fudge.

First, add sugar, corn syrup, salt and milk to a sauce pan.

Stick your candy thermometer in the pan, and boil boil boil until soft ball stage (235 degrees).

I think I took my thermometer out a few degrees before because I was impatient, and it turned out JUST PERFECT.

Remove the pan from the heat and immediately stir in one cup of marshmallows. Now it’s stir time!

STIR STIR STIR until all those lovely fluffy marshmallows are melted. Add the peanut butter and stir some more.

Now fold in all the remaining marshmallows and the peanuts. Immediately pour into a lined baking dish and quickly spread the fudge mixture evenly to cover the bottom of the pan.

Work quickly here before the fudge starts to set! 

Finally, put the whole pan in the fridge and let it set! Mine took just over 30 minutes, but you could certainly leave it in for up to an hour to get the texture you want.

When set the fudge will be easy to slice but shouldn’t be melty or gooey. Slice the fluffernutter fudge into squares and enjoy!

Tips and Tricks

  • Mini marshmallows are my preference.  They melt much more quickly than full sized marshmallows and you want the unmelted ones small enough to bite into! If you can’t get miniatures, use full size marshmallows and chop them into bite sized pieces before proceeding with the recipe.
  • Can this be made without a candy thermometer? I don’t recommend it. Getting the corn syrup mixture to the right temperature is key to achieving the consistency you need. Without it, the fudge could be a runny mess or hard as a rock. For a homemade fudge recipe without a thermometer, check out this other Peanut Butter Fudge recipe!
  • Variations: I think this fluffernutter candy is delicious all on its own. If you’re like I usually am and can’t resist adding chocolate to everything, you could certainly top this with a layer of melted dark chocolate before putting it in the fridge! White chocolate would taste great on top of this fudge too if you’re so inclined.
  • Storing: I keep this in an airtight container at room temperature. If your house runs warm you might want to store it in the refrigerator instead.

New to making homemade fudge? My guide for How to Make Fudge is the ultimate guide for making perfect homemade candies, no matter what your skill level.

The creamy, sweet, nutty flavors you loved in your favorite sandwich as a kid are even better in homemade candy form. Make this  Fluffernutter Fudge for yourself, or that special someone in your life! 

Yield: 2 dozen

Fluffernutter Fudge


  • 3 cup granulated sugar
  • 3/4 cup unsalted butter
  • pinch of kosher salt
  • 1 cup heavy cream
  • 2 cup white chocolate morsels
  • 3/4 cup peanut butter
  • 7oz jar marshmallow cream
  • 1 cup mini marshmallows
  • 1/2 cup lightly salted roasted peanuts


  1. Line a 8x8 baking dish with parchment paper or foil. Set aside.
  2. In a large mixing bowl, add white chocolate morsels, peanut butter, and marshmallow cream. Set aside.
  3. In a large saucepan, heat granulated sugar, butter, salt and heavy cream until combined. Bring to a ROLLING boil and stir continuously for 4 minutes (set your timer)!
  4. Remove from heat. Quickly pour hot mixture into the large mixing bowl with the other ingredients. Mix for one minutes, until smooth.
  5. Fold in mini marshmallows and peanuts. Pour fudge into prepared pan and refrigerate for 3 hours, until hardened.
  6. Remove from pan, remove lining. Cut into bite sized pieces.

Did you make this recipe?

Please leave a comment on the blog or share a photo on Instagram


About Aimee

Aimee is a dessert lover (specifically rice krispie treats), workout enthusiast, self-taught foodie, and recipe creator.

Learn more about Aimee.

Affiliate Disclosure:**There may be affiliate links in this post! By clicking on them, or purchasing recommended items I may receive a small compensation. However, I only recommend products I love! Thank you for supporting Shugary Sweets! See my disclosure policy for more info**

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Posted on February 20, 2012

Comments & Reviews

  1. Went out and bought a candy thermometer just so I could make this fudge. So happy to find an appealing peanut butter recipe without chocolate. Don’t get me wrong. I love chocolate and I love peanut butter, just not combined. Thank you!

  2. Peanut butter, marshmallows and peanuts all in one little recipe? Looks DELICIOUS!!!!!!!!!!!!!!!!!!!!!!!!!!!! Mmmmmmm!!!

  3. This recipe looks so delicious! Thanks for sharing. We loved having you join us at “Strut Your Stuff Saturday.” We hope you’ll be back next week! -The Sisters

  4. Holy Flippin’ Cow — these look incredible! Pinned ’em and am spotlighting your post on my Facebook page. You can bet I’ll be making them soon too!

  5. This looks sooo good! I have featured you this week on Makin’ You Crave Monday. Come by, say hi, and hope to see you again this week!


  6. I LOVE peanuts, and I have a vegan marshmallow recipe open in the other window, so this could be very good timing 🙂

  7. This looks DELICIOUS! So I have been reading a book (Recovering Charles), and one of the characters favorite sandwiches is a fluffernutter sandwich… I am a little ashamed to admit I had to google it to find out what it was!


  8. I’m a huge peanut butter fan! It’s almost a problem…I’ll just spoon it out of the jar 🙂 I’m going to have to give this fudge a try, this looks amazing!I love the marshmallows with the roasted peanuts.. yum!

  9. I’m a huge peanut butter fan! It’s almost a problem…I’ll just spoon it out of the jar 🙂 I’m going to have to give this fudge a try, this looks amazing!I love the marshmallows with the roasted peanuts.. yum!

  10. That fudge looks delicious! I love peanut butter anything! Your recipes always look so delicious. Come visit us. We have some wonderful things to share this week. Risotto with Greens!

  11. Peanut butter fudge is my favorite…okay, really peanut butter anything is my favorite! This variation to regular peanut butter fudge sounds wonderful. I love that there are mini marshmallows and peanuts in it. I will have to try this soon 🙂

  12. I am 100% positive I’m making this fudge ASAP. I am a nut for fluffernutter anything. And so weird, I am not a huge PB fan either! The world works in mysterious ways.

  13. I do happen to love PB…especially when paired with marshmallows (and butter and sugar)…so this is perfect for me 🙂

  14. I just made cooked “candy thermometer” fudge for the first time yesterday and OMG! It’s so good! And this version? With the peanut butter. I’d probably eat the whole tray and make myself sick. 🙂

  15. YUM! Peanut butter fudge is something I can agree on with my Mother-in-Law. We both love it and I make some for her every Christmas. This version looks amazing!

  16. Interesting little fact that you are sharing today…I have now found one more thing that makes us different:-) I love peanut butter anything! I even eat it from the jar 1 spoonful at a time.

    This fudge looks…Amazing!!!! I love soft marshmallows to bite into too!!! So I guess I am moving in with you now. Hope you saved me some fudge!!!

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