As I rummaged through my pantry one afternoon, a little jar of peanut butter caught my eye, igniting a sweet nostalgia for those delicious fluffernutter sandwiches I adored as a kid. Today, I’m thrilled to share my recipe for Fluffernutter Cookies—a fantastic twist on that classic. These soft and chewy cookies, packed with gooey marshmallow goodness, come together in no time, making them perfect for a quick baking session. No complicated techniques or chilling required—just a delightful treat for peanut butter lovers and a surefire way to impress family and friends. Want to bake something delicious that evokes childhood memories? Let’s dive in and whip up a batch of these irresistible cookies!

Why are Fluffernutter Cookies a must-bake?
Irresistible Texture: These Fluffernutter Cookies boast a soft, chewy bite with pockets of warm, gooey marshmallows that bring comfort with every bite.
Quick & Simple: No intricate steps are needed here; just mix, scoop, and bake! Perfect for those busy days when you crave a homemade treat.
Nostalgic Flavor: Each cookie is a delicious throwback to childhood fluffernutter sandwiches, blending creamy peanut butter with sweet marshmallow for a taste that resonates.
Versatile Fun: Feel free to customize! Toss in chocolate chips for an extra layer of flavor or swap mini marshmallows for a dollop of marshmallow fluff.
Crowd-Pleasing Delight: These cookies are guaranteed to impress at gatherings. Whether served warm with milk or alongside ice cream, they’re sure to be a hit!
Get ready to whip up a batch of these delightful cookies that will not only satisfy your sweet tooth but also take you on a nostalgic journey! If you’re in the mood for a classic, don’t forget to check out my amazing Chocolate Chip Cookies!
Fluffernutter Cookies Ingredients
• Get ready to bake delightful cookies!
For the Cookie Base
- All-Purpose Flour – Provides structure; you can substitute it with a gluten-free flour blend for a gluten-free version.
- Baking Soda – Acts as a leavening agent to ensure a light and fluffy cookie.
- Salt – Enhances the overall flavor; reduce to ¼ tsp if using salted butter.
- Unsalted Butter – Adds richness and moisture; ensure it’s at room temperature for easy mixing.
- Granulated Sugar – Brings sweetness and helps achieve the ideal texture; swap with coconut sugar for a less refined option.
- Light Brown Sugar – Contributes moisture and a deep, caramel flavor; can be replaced with more granulated sugar if necessary.
- Creamy Peanut Butter – The star ingredient providing that rich, nutty goodness; almond butter can be used for a different twist.
- Large Egg – Binds the ingredients together; there are no great substitutes that will maintain the same effect.
- Vanilla Extract – Infuses depth into the flavor; always opt for pure vanilla extract for the best result.
For the Gooey Filling
- Mini Marshmallows (Frozen) – These are the secret to that irresistible gooiness; skip regular marshmallows and freeze them to prevent melting too quickly.
Embrace your inner baker and create Fluffernutter Cookies that are sure to become a cherished favorite!
Step‑by‑Step Instructions for Fluffernutter Cookies
Step 1: Prepare Marshmallows
Begin by preparing your mini marshmallows for the Fluffernutter Cookies. Place them in the freezer for at least 1–2 hours to firm them up. This step is key, as freezing prevents the marshmallows from melting too quickly during baking, ensuring that each cookie is filled with gooey goodness.
Step 2: Mix Dry Ingredients
In a medium bowl, whisk together the all-purpose flour, baking soda, and salt. This will help to evenly distribute the leavening agent throughout the flour, ensuring that your Fluffernutter Cookies rise beautifully. Set this dry mixture aside while you focus on the wet ingredients.
Step 3: Cream Mixture
In a large mixing bowl, beat the unsalted butter, granulated sugar, and light brown sugar using an electric mixer on medium speed. Continue mixing until the mixture becomes light and creamy, which should take about 2–3 minutes. This fluffy base will contribute to the delightful texture of your cookies.
Step 4: Incorporate Wet Ingredients
Add the creamy peanut butter, large egg, and vanilla extract to the creamed mixture. Mix thoroughly on low speed until all ingredients are well combined and smooth. You’ll want this luscious mixture to be uniform, as it forms the foundation of your Fluffernutter Cookies.
Step 5: Combine Ingredients
Gradually pour in the dry ingredient mixture, mixing until just combined. Be careful not to overmix, as this could affect the texture of your cookies. The dough should come together beautifully, ready to embrace the melted marshmallows that will make these Fluffernutter Cookies irresistible.
Step 6: Fold in Frozen Marshmallows
Remove the frozen marshmallows from the freezer and gently fold them into the cookie dough using a spatula. Take your time to ensure they are evenly distributed throughout the dough, creating those delightful gooey pockets that will ooze marshmallow magic when baked.
Step 7: Shape Cookies
Using a #30 scoop or your hands, form the cookie dough into balls and place them on prepared baking sheets, leaving enough space between each cookie to allow for spreading. Aim for about 2 inches apart; this will ensure your Fluffernutter Cookies bake evenly and have room to expand.
Step 8: Bake
Preheat your oven to 350°F (175°C), and once heated, carefully place the baking sheets in the oven. Bake the Fluffernutter Cookies for about 11–12 minutes, or until the edges are golden-brown. Keep an eye on them, as the centers may look slightly underbaked, which is perfect for achieving that soft, chewy texture.
Step 9: Cool
After baking, remove the cookies from the oven and let them cool on the baking sheet for about 10 minutes. This allows them to set before transferring to a wire rack. You’ll find that they continue to firm up while cooling, creating the ideal texture for each delicious bite of Fluffernutter Cookies.

What to Serve with Fluffernutter Cookies?
Looking to create the perfect spread for your Fluffernutter Cookies? Let’s explore some delightful pairings that will elevate your dessert experience!
- Cold Glass of Milk: The classic pairing! Refreshingly cool milk complements the warm, gooey cookies while balancing their sweetness.
- Vanilla Ice Cream: A scoop of creamy vanilla ice cream paired with warm cookies creates a delightful contrast of temperatures that’s sheer indulgence.
- Fruit Salad: Fresh, juicy fruits add a vibrant contrast and a hint of tartness to cut through the richness of the cookies.
- Chocolate Drizzle: A quick drizzle of melted chocolate on top enhances the flavors and brings an extra layer of decadence.
- Espresso or Coffee: The boldness of coffee balances the sweetness of the cookies, making it a lovely treat for dessert lovers.
- Peanut Butter Milkshake: For peanut butter enthusiasts, blend together peanut butter, milk, and ice cream for a creamy, dreamy shake that’s perfect alongside your cookies!
- Caramel Sauce: Drizzling warm caramel over the cookies amplifies their sweetness, creating an irresistible combination that will have you reaching for seconds.
- Coconut Macaroons: Chewy coconut treats bring a delightful texture contrast and tropical flair that pairs beautifully with the cookies.
Embrace these suggestions and enjoy a delightful dessert experience that will make your Fluffernutter Cookies shine!
Make Ahead Options
Fluffernutter Cookies are a fantastic choice for meal prep, allowing you to enjoy their delightful taste on busy days! You can prepare the cookie dough up to 24 hours in advance by following the first six steps and then refrigerating it in an airtight container. Additionally, freeze the formed cookie balls on a baking sheet until solid, then transfer them to a zip-top bag for up to 3 months in the freezer. When you’re ready to bake, simply preheat your oven and bake the frozen cookie balls for an extra minute or two. This way, your cookies will be just as delicious and chewy, making last-minute treats a breeze!
Fluffernutter Cookies Variations & Substitutions
Feel free to make these delectable Fluffernutter Cookies your own with these delightful twists!
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Chocolate Delight: Add chocolate chips to the dough for a rich flavor boost. The melty chocolate pairs wonderfully with the peanut butter!
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Marshmallow Fluff Swap: Instead of mini marshmallows, use marshmallow fluff by flattening dough balls and wrapping them around a dollop before baking. This creates an ultra-gooey center.
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Oatmeal Twist: For a chewy texture, replace half of the flour with rolled oats. Oatmeal Peanut Butter Cookies will evoke a comforting, homey feel.
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Crunchy Peanuts: Mix in chopped peanuts for added crunch and nutty flavor. They’ll provide a delightful contrast to the soft marshmallows.
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Spiced Up: Add a sprinkle of cinnamon or a touch of nutmeg to the dough. This warm spice infusion will bring a cozy aroma as they bake.
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Nut Butter Variety: Swap creamy peanut butter with almond butter or cashew butter. Each nutty flavor offers a unique twist while keeping the essence of the cookie.
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Caramel Surprise: Fold in caramel bits for a sweet surprise in every bite. The gooey caramel will mirror the marshmallow magic beautifully.
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Reduced Sugar: For a lighter version, reduce the granulated sugar by half and use a natural sweetener like maple syrup or honey, adjusting the flour slightly to maintain consistency.
These delightful variations not only cater to different tastes but also keep the spirit of your beloved Fluffernutter Cookies alive! And if you’re craving a classic cookie experience, my Chocolate Chip Cookies are always a hit!
How to Store and Freeze Fluffernutter Cookies
Room Temperature: Store cookies in an airtight container at room temperature for up to 5 days to keep them soft and chewy.
Fridge: If you prefer, you can refrigerate the cookies in an airtight container for up to 1 week, but this may slightly affect their texture.
Freezer: Freeze the cooled Fluffernutter Cookies in a single layer, then transfer them to a freezer bag or airtight container. They can stay fresh for up to 3 months!
Reheating: To enjoy them warm, simply reheat in the microwave for about 10-15 seconds, or warm them in the oven at 350°F (175°C) for a few minutes.
Expert Tips for Fluffernutter Cookies
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Avoid Overmixing: Overmixing the dough can lead to tougher cookies. Mix just until combined for that soft and chewy texture in your Fluffernutter Cookies.
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Chill If Needed: If your cookies spread too much during baking, try chilling the dough before baking. This prevents excessive spreading and keeps your cookies fluffy.
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Marshmallow Freezing: Don’t skip the freezing step for the marshmallows! It’s essential to keep them from melting too quickly, ensuring gooey pockets in each cookie.
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Uniform Sizing: Use a cookie scoop for uniform sizes, which helps the cookies bake evenly. This will make your Fluffernutter Cookies look as good as they taste!
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Rounding Misshaped Cookies: If any cookies come out misshaped, round them with your fingers while they cool on the tray. This creates that perfect round cookie shape while they set.

Fluffernutter Cookies Recipe FAQs
What type of peanut butter should I use in Fluffernutter Cookies?
I highly recommend using creamy peanut butter for a smooth texture, but feel free to experiment with crunchy peanut butter for added texture! Just steer clear of natural peanut butters that are too oily, as they might affect the dough consistency.
How should I store Fluffernutter Cookies?
Store your cookies in an airtight container at room temperature for up to 5 days. This keeps them wonderfully soft and chewy. You can also refrigerate them in an airtight container for up to a week, though this might change their texture a bit.
Can I freeze Fluffernutter Cookies?
Absolutely! To freeze, first let the cookies cool completely. Then, place them in a single layer on a baking sheet to freeze for about 1-2 hours. Once solid, transfer them to a freezer bag or airtight container. They’ll stay fresh for up to 3 months!
Why do my cookies spread too much while baking?
If your cookies spread too much, it could be because the butter was too soft. Make sure to use room temperature butter—not melted. Also, try chilling the dough for 15-30 minutes before baking, which can help reduce spreading.
Can I use different types of marshmallows?
For the best results, use frozen mini marshmallows, as regular marshmallows will melt too quickly and won’t give you that gooey texture in the cookies. If you’re looking for a marshmallow flavor without the melting issue, consider using marshmallow fluff instead.
Are Fluffernutter Cookies safe for people with allergies?
These cookies contain common allergens like peanuts and eggs. If you’re making them for someone with allergies, be sure to check the specific ingredients for cross-contamination, and consider using peanut butter alternatives such as almond butter or a sunflower seed spread.

Fluffernutter Cookies: Chewy Peanut Butter Bliss Awaits
Ingredients
Equipment
Method
- Prepare your mini marshmallows by placing them in the freezer for at least 1–2 hours.
- In a medium bowl, whisk together the all-purpose flour, baking soda, and salt.
- In a large mixing bowl, beat the unsalted butter, granulated sugar, and light brown sugar until light and creamy.
- Add the creamy peanut butter, large egg, and vanilla extract to the creamed mixture, mixing until smooth.
- Gradually pour in the dry ingredient mixture and mix until just combined.
- Fold the frozen marshmallows into the cookie dough gently using a spatula.
- Form the cookie dough into balls and place them on prepared baking sheets, leaving space between each.
- Preheat your oven to 350°F (175°C) and bake the cookies for about 11–12 minutes.
- Remove the cookies from the oven and cool on the baking sheet for about 10 minutes before transferring to a wire rack.

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