Fluffernutter Cookies

Fluffernutter Cookies – Soft, supremely CHEWY cookies that are loaded with marshmallows, peanut butter chips, and crispy rice cereal!! If you love lots of TEXTURE in your cookies, these are the cookies for you!!

When I told my daughter I was making fluffernutter cookies she thought I was making up the word fluffernutter.

I had to explain to her that flutternutter is used when there’s both fluff (marshmallows) and nutter (peanuts or peanut butter) in a recipe. I don’t know if she really believed me or not but she was a believer in the cookies.

What’s In The Cookies

The cookies not only have marshmallows and peanut butter chips, they also have crispy rice cereal. The cereal adds incredible texture to the cookies which I love.

In that sense they remind me of Cowboy Cookies which are the epitome of a kitchen sink cookie with tons of great texture.

How Do The Cookies Taste

The cookies are soft and incredibly chewy. As in your jaw will get a workout kind of chewy. Thanks to a high proportion of butter to flour, the cookies bake up thin but super chewy.

The marshmallows add additional chewiness and there’s something about the flavor of the marshmallows that pairs incredibly well with the peanut butter chips. A match made in fluffernutter heaven.

And then the crispy rice cereal is such a great bonus. As the cookies bake, the cereal loses some of it’s crispiness but retains just the right amount. It almost reminds me of oatmeal but it’s different. So good, you just have to try it.

Tips For Success

The recipe is from Christina Tosi of both the restaurant and the cookbook, Milk Bar. That cookbook inspired me to make her Crack Pie, which went on to become one of the top few recipes on my blog for about 5 years.

Although she doesn’t call for it, I believe that it is absolutely essential that you chill the dough for at least 2 hours before baking or your cookies will spread to the point of baking into each other.

Because of the butter to flour ratio (high), as well as the fact that there’s a high proportion of granulated sugar in the dough (also causes spreading), if you don’t start with chilled dough you’re asking for trouble.

Do not crowd the cookies on your baking sheet. I made 8 cookies on a half sheet pan and that was plenty. Any more and they would have baked into each other.

Bake on a Silpat. Your cookies will spread less and the cleanup from those gooey marshmallows will be a breeze.

As for the marshmallows themselves, try to not have them baking directly on the Silpat. Marshmallows are sugar and sugar burns easily. Trying to avoid contact with the baking surface is best.

More favorite cookie recipes:

Fluffernutter Cookies

5 / 5 ()
Did you make this recipe?


  • 1 cup unsalted butter, softened
  • 1 1/4 cups granulated sugar
  • 2/3 cup light brown sugar, packed
  • 1 large egg
  • 1 teaspoon vanilla
  • 1 3/4 cups all-purpose flour
  • 1 1/2 teaspoons kosher salt, or to taste
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 2 1/2 cups crisp rice cereal
  • 1 1/4 cups miniature marshmallows, plus more for adding on top of each cookie
  • 2/3 cup peanut butter chips, plus more for adding on top of each cookie


  1. To the bowl of a stand mixer fitted with the paddle attachment (or a large mixing bowl and handheld electric mixer), and the butter, sugars, and beat on medium-high speed until well combined, about 2 minutes.
  2. Stop, scrape down the sides of the bowl, and add the egg, vanilla, and beat until light and fluffy, about 5 minutes.
  3. Add the flour, salt, baking powder, baking soda, and beat on low speed until just combine, about 1 minute.
  4. Add the cereal, marshmallows, peanut butter chips, and beat very briefly to just incorporate, about 15 seconds.
  5. Using a 2-tablespoon cookie scoop, or your hands, form approximately 25 to 30 equal-sized mounds of dough, roll into balls, and flatten a little less than halfway.
  6. Place mounds on a large plate or tray, cover with plasticwrap, and refrigerate for at least 2 hours, up to 3 days. Do not bake with unchilled dough because cookies will bake thinner, flatter, and be more prone to spreading.
  7. Preheat oven to 350F, line a baking sheet with a Silpat or spray with cooking spray. Place dough mounds on baking sheet, spaced at least 2 inches apart (do not crowd them, they will spread; I use a half-sheet pan and bake 8 cookies per sheet), optionally add an additional marshmallow or two to the top of each cookie, and/or extra peanut butter chips, and bake for about 9 to 10 minutes (if your cookies are smaller/larger than mine, reduce/increase baking time) or until edges have set and tops are just set, even if slightly undercooked, pale, and glossy in the center; don’t overbake. Cookies firm up as they cool. Allow cookies to cool on baking sheet for before baking. I let them cool on the baking sheet and don’t use a rack. Cookies are best warm and fresh but will keep airtight at room temp for up to 5 days.

Adapted from BHG May 2018

Only Eats

Related Recipes

Peanut Butter Smores Cookie Pie – A peanut butter and graham cracker cookie underneath gooey marshmallows and melted chocolate!! You don’t need a campfire for these easy and AMAZING smores! Grab a spoon and dig in!!

Soft and Chewy Smores Cookies – Cookies complete with marshmallows, graham crackers, and loads of melted chocolate for the perfect smores, in cookie form!

Peanut Butter Cowboy Cookies – Chewy oats, sweet coconut, crunchy pecans, peanut butter, and plenty of chocolate!! A true ‘kitchen sink’ cookie that stays soft and chewy! Everyone (not just cowboys) loves these cookies!!

Cowboy Cookies – Chewy oats, sweet coconut, crunchy pecans, and plenty of chocolate! Hearty with tons of texture and they stay soft and chewy!! Everyone (not just cowboys) loves these cookies!

The Best Oatmeal Chocolate Chip Cookies – Soft, chewy, loaded with chocolate, and they turn out perfectly every time! Totally irresistible!

The Best Soft and Chewy Chocolate Chip Cookies – My favorite recipe for chocolate chip cookies! Just one bite and I think you’ll agree!

Loaded Oatmeal Chocolate Chip Cookies – Soft, chewy, and loaded with chocolate! Sinking your teeth into a thick, hearty cookie is the best!

Soft and Chewy Peanut Butter Oatmeal Chocolate Chip Cookies –  3 favorite cookies combined into 1 so you don’t have to choose!! Easy, no-mixer recipe, and always a hit!

Soft and Chewy Seven Layer Magic Bar Cookies –  Cookies with the flavors of the classic bars everyone loves! Soft, chewy, and loaded with texture!

Soft and Chewy Oatmeal Coconut Chocolate Chip Cookies – No butter & no mixer used in these easy cookies dripping with chocolate!

Soft and Chewy Oatmeal Scotchies Cookies – My favorite classic oatmeal cookie base loaded with sweet butterscotch chips! A classic cookie that you’ve just got to try!

Chewy Oatmeal Coconut Brown Sugar Cookies {Anzac Biscuits} – Soft, chewy, easy, no-mixer, no-egg cookies!

Chocolate Chip Peanut Butter Oatmeal Cookies – A trifecta of favorite ingredients, all rolled into an easy, soft, and chewy cookie!