Fluffernutter Sandwich Cookies

by Erin

Fluffernutter sandwiches represented in cookie sandwich form with classic peanut butter cookies sandwiched around marshmallow frosting.

Fluffernutter Sandwich Cookies #marshmallowfrosting

You know I couldn’t let #NationalPeanutButterDay pass by without recognition, so I joined up with 6 other bloggers to share the love of all things peanut butter together! I somehow have never shared just a classic peanut butter cookie recipe, so naturally I did that but them sandwiches them around marshmallow frosting because I cannot help myself but go the extra mile.

Fluffernutter Sandwich Cookies #NationalPeanutButterDay

Normally people create a criss-cross pattern on the top of peanut butter cookies using a fork, but instead I decided to use a meat mallet. Why the heck not? Have you ever used a non traditional tool to flatten your cookies before? Would be a good time to bust out an embossed rolling pin if you have one.

Fluffernutter Sandwich Cookies #peanutbutter #cookiesandwich

As for the frosting, I quite literally made it using marshmallow cream, cause sometimes I don’t have time to make the cream from scratch to then also use in my homemade frosting. I draw the line on how many homemade steps I am going to take when baking on weeknights. But today is Friday so all bets are off for the weekend ;-).

Looking for more fluffernutter creations? Try my fluffernutter blondies, no-churn fluffernutter ice cream, peanut butter marshmallow fluff cookies, or fluffernutter pie.

Fluffernutter Sandwich Cookies #fluffernutter #thespiffycookie

National Peanut Butter Day Recipes

Fluffernutter Sandwich Cookies #cookiemonster

One year ago: Fluffernutter Pie

Five years ago: DIY Painter’s Tape Accent Wall

Six years ago: Cranberry Greek Yogurt Waffles

Seven years ago: Salted Nutella Peanut Butter Thumbprint Cookies

Eight years ago: Homemade Pizza Sauce

Nine years ago: Peanut Butter Stuffed Chocolate Chip Cookies


Makes approximately 2 dozen sandwiches 



1-1/2 cup creamy peanut butter

1 cup unsalted butter, room temperature

1-1/3 cup light brown sugar

1/2 cup white sugar

2 eggs, room temperature

2 tsp vanilla extract

2-2/3 cup all-purpose flour

2 tsp baking soda

1/2 tsp salt


1 (7 oz.) jar marshmallow creme

1/2 cup (1 stick) unsalted butter, room temperature

1 Tbsp milk or heavy cream

1 tsp vanilla extract

1 to 1-1/2 cups powdered sugar


  1. Preheat oven to 350 degrees. Line baking sheets with parchment or silicone baking mats, set aside.
  2. In a large bowl, beat peanut butter and butter until smooth, add sugars and continue to beat until fluffy – about 3-4 minutes. Add egg and vanilla, mixing until combined. Add flour, baking soda and salt, mixing until just combined and dough forms.
  3. Drop tablespoon-sized (or medium cookie scoop) dough balls on a baking sheet, press down slightly (or make pattern with forks), and bake for 10-12 minutes. Let cool on pan before transferring to wire rack to cool completely
  4. Meanwhile, make the frosting. In large bowl, beat marshmallow creme, butter, milk, and vanilla until blended and smooth. Add powdered sugar 1/2 cup at a time and beat until fluffy. To reach desired consistency add more powdered sugar to thicken or a tablespoon of milk to thin.
  5. Flip half of the cookies over and spread (or pipe) a tablespoon of frosting onto the center. Sandwich with the remaining cookies.

Source: Adapted from my Chewy Peanut Butter Cookies with Chocolate Candied Bacon and Coke Cupcakes with Marshmallow Frosting.

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Christie February 6, 2020 - 7:11 pm

These are my fave cookie from childhood. These look so delicious!

spiffycookie February 8, 2020 - 9:48 pm

I actually had never heard of a fluffernutter until I was an adult! But they are certainly something I would have loved as a child as well.

Ramona January 25, 2020 - 4:59 pm

Ha, I love the name of these cookies, fluffernutter what an original name! I love how fluffy they look and I must make them ASAP. I love the original idea of the pattern used, I initioally thought was a fork made one but great idea to using a meat mallet. Thank you for sharing!

spiffycookie January 27, 2020 - 7:10 am

I can’t take credit for the name, it’s from the fluffernutter sandwich that was popular in my childhood

Pavani January 24, 2020 - 2:10 pm

Those sandwich cookies look sooo inviting. Peanut butter cookies are one of my favorite and sandwiching them with marshmallow creme sounds absolutely delicious. Love the tip of using meat mallet :-)

Lizet Bowen January 24, 2020 - 10:06 am

Mmm. I love anything peanut butter. But I haven’t had this combo before. Of course, both are amazing, so you can’t go wrong with these cookies. Delicious!

spiffycookie January 27, 2020 - 7:09 am

I thought I was the only one who never had a fluffernutter sandwich growing up! I didn’t discover the combo until I was an adult.


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