This post may contain affiliate links, please see our privacy policy for details.

Confession time.

Chocolate Chip Banana FlufferNutter Sandwich Cookies |

Before I made these cookie I really did not know what a fluffernutter was.

Here is the truth, I am not the biggest marshmallow person. Okay wait, warm marshmallows with chocolate? Yes. Gooey, sticky, still warm Rice Krispie Treats with maybe a little chocolate mixed in? Yes. But just marshmallows alone? No. I can’t do it, it’s too sugary and too boring.

And I always think, I would rather be eating something else.Chocolate Chip Banana FlufferNutter Sandwich Cookies |

Also, up until a few months ago when I made these Toasted Coconut Caramel Peanut Butter Snickers Bars I had no idea marshmallow fluff even existed.

I had never bought it before and I never had any growing up. My mom was strictly a chocolate cake, chocolate chip cookie, Special K Bars, peacan pie, chocolate chip cookie pie and the occasional Rice Krispie Treat kind of baker. Marshmallows were saved for S’mores and Rice Krispie Treats.

Oh and sweet potato casserole on Thanksgiving!

It was only once I started blogging that I realized there is about a million and one recipes out there calling for marshmallows and or marshmallow fluff.

Chocolate Chip Banana FlufferNutter Sandwich Cookies |

And I mean marshmallow frosting?

Yeah, I definitely did not know that existed.

Chocolate Chip Banana FlufferNutter Sandwich Cookies |

Welp, now I do!!

And oh boy am I excited about it. I mean wasn’t it just two weeks ago that I posted these S’more Milk Chocolate Mousse filled Chocolate Cups with Marshmallow Frosting? Yeah, it was.

I am like a kid with a new toy. Just swap the toy for marshmallow frosting.

Chocolate Chip Banana FlufferNutter Sandwich Cookies |

So I researched what the heck a fluffernutter sandwich was.

Peanut butter and marshmallow fluff sandwiched between two pieces of bread. Sounds ok, but probably not my thing. So I kicked up the fluffernutter and added bananas and chocolate.

It just made sense.

Not sure if you can still call this a fluffernutter, but I’m going with it, and what ever you want to call it, it’s good!!

They are pretty simple to make, but the tricky part is keeping the sandwiches from sliding to one side while the marshmallow filling dries. When the filling is wet, the top cookie wants to slide off. I found that if you line the cookies up in rows so that they are touching and all sitting up right, the cookies are all forced to stay in position and not slide. This way they stay aligned and pretty!

Chocolate Chip Banana FlufferNutter Sandwich Cookies |

Chocolate Chip Banana FlufferNutter Sandwich Cookies

Prep Time 15 minutes
Cook Time 15 minutes
Rest 1 hour
Total Time 1 hour 30 minutes
Servings: 18 cookies
Calories Per Serving: 262 kcal

Nutritional information is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed.

Save This Recipe To Your Recipe Box

You can now create an account on our site and save your favorite recipes and access them on any device! You can keep track of your favorite recipes and generate a shopping list for recipes in your collections.

Register & Save

Already Registered? Login Now


Marshmallow filling

  • 4 egg whites
  • 1 cup sugar
  • 1/4 teaspoon cream of tarter


  • Preheat the oven to 350 degrees F.
  • Combine the flour, baking powder, baking soda and salt in a bowl. Set aside.
  • In the bowl of a stand mixer (or use a hand held) cream together the butter, brown sugar and powdered sugar until light and fluffy, about 2 minutes. Add the peanut butter and egg and beat until smooth and combined. Add the mashed banana and vanilla, beating until smooth.
  • Gradually beat in the flour mixture. Stir in the chocolate chips. Line two baking sheets with parchment paper or silpats.
  • When the oven is preheated drop about two teaspoons dough onto the prepared baking sheets.
  • Bake for 7 to 10 minutes and do not over cook. If anything undercook. Cool completely before filling.
  • To make the filling, place the egg whites, sugar, and cream of tartar in the heatproof bowl of an electric mixer (or if you do not have a stand mixer use a regular heat proof bowl). Set over a saucepan with simmering water. Whisk constantly until sugar is dissolved and whites are warm to the touch, 4 minutes.
  • Transfer the bowl to stand mixer fitted with the whisk attachment, and beat, starting on low speed, gradually increasing to high, until stiff, glossy peaks form, 5 to 7 minutes. Add vanilla, and mix until combined.
  • To fill the cookies flip half the cookies upside so the flat side is facing up. Spoon or pipe about 2 teaspoons of the marshmallow frosting onto all the cookies, leaving about 1/4 inch border. Wait 5 to 10 minutes and then top each cookie with it's other half. Line the cookies up in rows on a balking sheet and let the frosting set completely, about 1 hour. Try to tightly line the cookies up so that they are upright and strait. Some of my cookies wanted to slide to the side and I ended up with a few cookies that were crooked.
  • Store in an airtight container.


*Frosting from [Martha Stewart |]
View Recipe Comments

Chocolate Chip Banana FlufferNutter Sandwich Cookies |

Attention…The fluffernutter just got SO much better.


You May Also Like

Add a Comment

Recipe Rating

This site uses Akismet to reduce spam. Learn how your comment data is processed.


  1. Oh geez, these look so good…but then again, what doesn’t look good that you make?? 🙂

  2. YUM!! I looooved marshmallow frosting as a little girl. I even had a whole carebear cake with purple marshmallow frosting. 🙂

  3. Peanut butter and chocolate = heaven and the marshmallow frosting!!! OH MY!!! Bet these cookies will ship just fine to Georgia! 😉

  4. I sorta feel like I’ve been missing out this whole time—I really had no idea what a fluffernutter was either! And totally agree on the marshmallow thoughts, can’t really eat them plain, unless they are torched and with chocolate. My sugar tolerance is too low –> that sentence makes me feel old, haha.

    I’m going to stick with your version! 🙂

    1. Yes, I am not alone!! Seriously, this is a relief!! People cannot believe I have never had a fluffernutter!

      Thanks Laura!

  5. I grew up eating fluffernutters but have not introduced my kids to them yet. I am afraid once they start they will never want to stop!!! These cookies look wonderful!

  6. If it makes you feel better, I had no idea on what a fluffernutter was beofre reading your post because we don’t have them over here! Anyway, I’m happy to finally know what they are, how can you go wrong with cookies stuffed with marshmallow fluff?? They must be terrific, I’m definitely loving the banana addition 😀

  7. Fluffernutters were my favorite sandwich growing up. What am I saying…they are still my favorite 🙂 I love that you added banana and chocolate to this fun cookie! I want like 9 for breakfast!!!

    1. LOL! Thank you so much, Jocelyn! I cannot believe I have never had any fluffernutter themed foods until these cookies. I have been missing out!

  8. This brings me back to the days of brown bag school lunches – my mom would always put fluffernutters in for a treat. Yours look a million times better than any packaged cookie and I’d be willing to make a big ol batch of marshmallow to go to fluffernutter town! 🙂

    1. Thank you, Julie!! I cannot believe I have never had any fluffernutter themed foods until these cookies. I have been missing out!

  9. I love a fluffernutter! I think the idea originated in New England so we grew up eating them. That said, I am totally on board with your take – these cookie sandwiches are awesome 🙂

  10. I’ve always wondered what to do with that marshmallow fluff stuff and now I know! Love the idea of these cookies.

  11. They look fabulous! I made fluffernutter frosted cookies last week! Can never go wrong with Flufffffff! 🙂