If you have a soft spot for nostalgic sweets packed with peanut butter and marshmallow magic, you are going to adore this Fluffernutter Cookies Recipe. These cookies blend creamy peanut butter, sweet marshmallow fluff, and tender baked dough into a delightfully gooey treat that feels like a warm hug in every bite. Whether you’re making them for an afternoon snack, a party, or just because, these cookies bring fun and comfort together effortlessly.

Ingredients You’ll Need
We’re keeping it simple but scrumptious with ingredients that you likely already have in your pantry and fridge. Each one plays a special role in creating the perfect balance of flavor, texture, and that iconic Fluffernutter charm.
- 1/2 cup unsalted butter, softened: Adds richness and a tender crumb to the cookies.
- 1/2 cup peanut butter: The heart of the recipe, giving that unmistakable nutty flavor and creamy texture.
- 1/2 cup brown sugar: Provides moisture and a deep caramel sweetness that complements the peanut butter.
- 1/4 cup granulated sugar: Balances sweetness and helps achieve a slight crispness on the edges.
- 1 egg: Binds all the ingredients and brings structure.
- 1 teaspoon vanilla extract: Enhances the flavors with warm, fragrant notes.
- 1 1/2 cups all-purpose flour: The foundation of the cookie dough, creating that perfect chew.
- 1/2 teaspoon baking soda: A leavening agent that helps the cookies rise just right.
- 1/4 teaspoon salt: Balances sweetness and intensifies flavor.
- 1/2 cup marshmallow fluff: The trademark sweet, gooey topping that makes these cookies unforgettable.
How to Make Fluffernutter Cookies Recipe
Step 1: Preheat and Prepare
Start by heating your oven to 350°F (175°C) and lining a baking sheet with parchment paper. This simple step ensures your cookies bake evenly without sticking, giving you that perfect release when they’re ready.
Step 2: Cream the Butters and Sugars
In a mixing bowl, beat together the softened butter, peanut butter, brown sugar, and granulated sugar until everything becomes creamy and well combined. This creates a smooth, luscious base that brings wonderful texture to your cookies.
Step 3: Add the Egg and Vanilla
Add in the egg and vanilla extract, beating until the mixture is smooth. The egg acts like glue, while the vanilla adds a subtle depth to the flavor that makes each bite instantly addictive.
Step 4: Combine Dry Ingredients
In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add this dry mixture to the wet ingredients, stirring until just combined to avoid overmixing, which can toughen the cookies.
Step 5: Shape the Cookies
Scoop tablespoon-sized portions of the dough onto your prepared baking sheet, spacing them about two inches apart. This space lets the cookies spread beautifully without merging into each other.
Step 6: Add the Marshmallow Topping
Dollop a small amount of marshmallow fluff on top of each cookie dough ball. This gives each cookie that classic Fluffernutter sweetness and a gooey finish as it bakes.
Step 7: Bake to Perfection
Bake for 10-12 minutes, until the edges are golden brown and cookie centers are set but still soft. Your kitchen will fill with an irresistible aroma that’s pure peanut butter and vanilla joy.
Step 8: Cool and Enjoy
Let the cookies cool on the baking sheet for five minutes before transferring them to a wire rack to cool completely. This keeps them tender on the inside while allowing the marshmallow top to set just right.
How to Serve Fluffernutter Cookies Recipe
Garnishes
For an extra touch, consider sprinkling chopped peanuts or a light drizzle of melted chocolate on top of the marshmallow after baking. It adds a delightful crunch and brings a sophisticated twist to these fun cookies.
Side Dishes
Fluffernutter cookies pair beautifully with a cold glass of milk or a cup of rich hot chocolate, making the ultimate cozy combo. They also work well alongside fresh fruit to balance the sweetness if you’re serving a crowd.
Creative Ways to Present
Try stacking the cookies into a homemade cookie sandwich with an extra spoonful of marshmallow fluff or peanut butter in the middle for a fun party treat. You can also shape mini cookies with less dough to create bite-sized snacks that disappear quickly at gatherings!
Make Ahead and Storage
Storing Leftovers
Store your Fluffernutter Cookies in an airtight container at room temperature for 3-4 days. This keeps them soft and fresh enough to enjoy each time you crave that perfect peanut butter and marshmallow bite.
Freezing
If you want to keep them longer, freeze the cookies in a sealed container or freezer bag for up to 3 months. Just thaw at room temperature when you’re ready to enjoy a sweet treat anytime you want.
Reheating
To bring back the freshly baked feel, warm cookies in the microwave for 10-15 seconds or pop them in a low oven for a few minutes. This melts the marshmallow slightly and revives that delicious softness perfectly.
FAQs
Can I substitute peanut butter with another nut butter?
Absolutely! Almond or cashew butter can work fine, though the flavor will shift. Just remember peanut butter is key for the authentic Fluffernutter Cookies Recipe taste we all love.
What if I don’t have marshmallow fluff?
If you’re out of fluff, mini marshmallows can be a good replacement. Place a few on top of the dough before baking to get that gooey marshmallow effect, though it might not be quite as smooth.
How do I make sure the cookies stay soft?
Don’t overbake your cookies; remove them as soon as the edges turn golden and the centers are set. Cooling on the baking sheet for a few minutes also helps them stay tender.
Can I add mix-ins like chocolate chips or nuts?
Definitely! Toss in chocolate chips or chopped nuts into the dough before baking to add texture and extra flavor while keeping the cookie’s classic character.
Is this recipe suitable for making mini cookies?
Yes, you can reduce the dough portion size and bake for 8-10 minutes to create perfect bite-sized Fluffernutter Cookies. They’re great for parties or quick snacks!
Final Thoughts
This Fluffernutter Cookies Recipe is the ultimate blend of nostalgia and irresistible flavor, perfect for peanut butter lovers and marshmallow fans alike. Once you try these, they’ll quickly become a beloved staple in your baking repertoire. So go ahead, bake a batch and share a little sweet joy with those you love!
Print
Fluffernutter Cookies Recipe
- Prep Time: 15 minutes
- Cook Time: 12 minutes
- Total Time: 27 minutes
- Yield: 24 servings
- Category: Dessert
- Method: Baking
- Cuisine: American
Description
These Fluffernutter Cookies combine the classic flavors of peanut butter and marshmallow fluff into soft, chewy cookies that are perfect for any occasion. With a rich peanut butter base and a sweet marshmallow topping, these cookies offer a delightful balance of creamy and chewy textures.
Ingredients
Wet Ingredients
- 1/2 cup unsalted butter, softened
- 1/2 cup peanut butter
- 1/2 cup brown sugar
- 1/4 cup granulated sugar
- 1 egg
- 1 teaspoon vanilla extract
Dry Ingredients
- 1 1/2 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
Topping
- 1/2 cup marshmallow fluff
Instructions
- Preheat Oven: Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper to prevent sticking and ensure even baking.
- Cream Butters and Sugars: In a bowl, beat together the softened butter, peanut butter, brown sugar, and granulated sugar until the mixture is creamy and well combined, which helps achieve a smooth cookie texture.
- Add Egg and Vanilla: Mix in the egg and vanilla extract until the batter becomes smooth, incorporating all ingredients evenly.
- Combine Dry Ingredients: In a separate bowl, whisk together the all-purpose flour, baking soda, and salt to evenly distribute the leavening agents and seasonings.
- Mix Dry and Wet Ingredients: Gradually add the dry ingredients into the wet mixture, stirring until just combined to avoid overmixing and tough cookies.
- Scoop Dough: Using a tablespoon, scoop portions of dough onto the prepared baking sheet, spacing each about 2 inches apart for proper spreading.
- Add Marshmallow Fluff: Dollop a small amount of marshmallow fluff on top of each dough ball to add a sweet, gooey element during baking.
- Bake: Bake the cookies for 10-12 minutes until the edges turn golden brown and the centers are set but still soft.
- Cool Cookies: Allow the cookies to cool on the baking sheet for 5 minutes to firm up before transferring them to a wire rack to cool completely, which helps them set perfectly.
- Optional Chocolate Chips: For an indulgent twist, add chocolate chips to the dough before baking.
- Optional Nuts: Fold in chopped peanuts or other nuts for added crunch and texture.
- Mini Cookies: To make bite-sized treats, reduce dough portions and bake for 8-10 minutes, adjusting baking time accordingly.
- Marshmallow Fluff Center: Create an indentation in each dough ball and fill it with marshmallow fluff for a gooey, molten center inside the cookie.
Notes
- Ensure butter and peanut butter are softened to achieve a creamy dough texture.
- Do not overmix the dough once dry ingredients are added to prevent tough cookies.
- Spacing cookies properly on the baking sheet prevents them from merging during baking.
- Marshmallow fluff can brown slightly during baking, adding a caramelized flavor.
- Store cookies in an airtight container at room temperature for up to 5 days.
- Freezing cookie dough balls is possible; bake directly from frozen with a couple of extra minutes baking time.

