As the aroma of warm peanut butter cookies wafted through my kitchen, I couldn’t help but feel a wave of nostalgia wash over me—especially with my favorite Fluffernutter Cookies baking in the oven. These crowd-pleasers are both soft and chewy, with gooey marshmallows tucked inside, making them a hit with family and friends alike. The best part? There’s no rolling or chilling dough required, so you can indulge in this delightful dessert in no time. Plus, they come with endless customization options, like adding chocolate chips for an extra touch of sweetness. Ready to dive into the world of sweet surprises? Let’s get baking!

Why Are Fluffernutter Cookies So Special?
Soft and Chewy Texture: These cookies are delightfully soft and chewy, making every bite a melt-in-your-mouth experience.
Gooey Marshmallow Surprise: Tucked within each cookie is a gooey marshmallow that adds to the overall indulgence, ensuring a sweet surprise with every bite.
Effortless Preparation: With no rolling or chilling required, you can whip up these cookies in no time—perfect for a last-minute treat!
Endless Customization: Want to switch things up? Try adding chocolate chips or even a Hershey’s kiss on top for a delicious twist.
Family-Friendly Delight: Children and adults alike will love these cookies, making them an excellent choice for family gatherings or baking with kids.
Deliciously Nostalgic: With their familiar flavors, these Fluffernutter Cookies will transport you back to carefree days, providing comfort with every delicious bite.
If you’re also looking for fantastic cookie recipes, check out my Cinnamon Roll Cookies or the ever-popular Cannoli Cookies!
Fluffernutter Cookies Ingredients
• Here’s everything you need for delightful Fluffernutter Cookies.
For the Cookie Dough
- All-Purpose Flour – Provides structure to the cookies, ensuring a lovely chewy texture with a golden hue.
- Baking Soda – Acts as a leavening agent; always check that it’s fresh to help your cookies rise perfectly.
- Salt – Enhances flavor and balances sweetness; feel free to adjust based on your taste preference.
- Unsalted Butter – Adds richness; make sure it’s at room temperature for easy mixing.
- Granulated Sugar – Sweetens your cookies beautifully and aids in browning; can be substituted with coconut sugar for a delightful twist.
- Light Brown Sugar – Contributes moisture and a slight caramel flavor that make your cookies irresistible.
- Creamy Peanut Butter – The star of the show! Use natural peanut butter for health benefits or opt for flavored varieties if you’re feeling adventurous.
- Large Egg – Acts as a binder while adding moisture to your dough; room temperature eggs work best for thorough mixing.
- Vanilla Extract – A must-have for enhancing flavor; pure vanilla offers the richest taste.
For the Filling
- Mini Marshmallows – Bursting with gooeyness; make sure to freeze them for 1-2 hours before usage to prevent excessive melting. Alternatively, marshmallow fluff can also be used for filling.
With these simple yet essential ingredients, your Fluffernutter Cookies will soon be on their way to becoming a family favorite!
Step‑by‑Step Instructions for Fluffernutter Cookies
Step 1: Prepare Marshmallows
Begin by freezing mini marshmallows for 1-2 hours before baking your Fluffernutter Cookies. This crucial step ensures that the marshmallows maintain their shape and don’t completely melt during baking, allowing for that gooey center you crave. Spread them out on a plate or sheet for even freezing.
Step 2: Preheat Oven
Preheat your oven to 350°F (175°C) while preparing your cookie dough. Line two baking sheets with parchment paper or silicone mats to prevent sticking and ensure easy cleanup. By the time your dough is ready, the oven will be perfectly heated for baking the cookies to golden perfection.
Step 3: Mix Dry Ingredients
In a medium bowl, whisk together the all-purpose flour, baking soda, and salt until well combined, and set this mixture aside. This ensures your leavening agent is evenly distributed throughout the flour, contributing to the soft and chewy texture of your Fluffernutter Cookies, essential for a delightful cookie experience.
Step 4: Cream Butter and Sugars
In a stand mixer, combine the room temperature unsalted butter, granulated sugar, and light brown sugar. Beat them on medium speed until the mixture is light and creamy, about 3-4 minutes. This process helps incorporate air, creating a fluffy base for your cookie dough that contributes to the cookies’ texture.
Step 5: Combine Wet Ingredients
Next, add the creamy peanut butter, large egg, and vanilla extract to the butter-sugar mixture. Mix on medium speed until everything is well incorporated, ensuring a smooth and uniform batter. The combination of these ingredients creates the deliciously nutty flavor profile of the Fluffernutter Cookies.
Step 6: Incorporate Dry Ingredients
Gradually add the flour mixture to the wet ingredients using the mixer on low speed, mixing until just combined. Be careful not to overmix, as this can lead to denser cookies. You want a soft and slightly sticky dough that will hold the delicious fillings perfectly.
Step 7: Fold in Marshmallows
Gently fold the frozen marshmallows into the cookie dough using a spatula. This step is crucial as it ensures an even distribution of marshmallows throughout the dough, promising gooey pockets in every Fluffernutter Cookie. Avoid excessive mixing to maintain soft, chewy texture.
Step 8: Shape Cookies
Using a #30 scoop or a tablespoon, form the dough into balls and place them about 2 inches apart on the lined baking sheets. Keep the dough balls roughly the same size for uniform baking, which helps ensure that each Fluffernutter Cookie bakes evenly, resulting in that perfect soft texture.
Step 9: Bake
Place the baking sheets in the preheated oven and bake the cookies for 11-12 minutes, or until the edges are golden and the centers appear set. The cookies will continue to firm up as they cool, striking the ideal balance between soft and chewy when they come out of the oven.
Step 10: Cooling
Once baked, remove the cookies from the oven and allow them to cool on the baking sheets for about 10 minutes. This resting period helps the cookies firm up without losing their delightful gooeyness. After cooling, transfer them to a wire rack to cool completely and enjoy the sweet, marshmallow-filled treats.

Make Ahead Options
These Fluffernutter Cookies are a fantastic option for busy home cooks looking to save time during the week! You can prepare the cookie dough up to 24 hours in advance by mixing all the ingredients except for the frozen marshmallows. Just be sure to store the dough in an airtight container in the refrigerator to maintain its freshness. To keep the marshmallow surprise intact, freeze the mini marshmallows separately for 1-2 hours and add them right before baking. When you’re ready to enjoy your cookies, simply scoop the chilled dough onto a baking sheet, bake as directed, and experience warm, gooey goodness without the hassle!
What to Serve with Soft and Chewy Fluffernutter Cookies
Pair these delightful cookies with the perfect complement to elevate your dessert experience.
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Cold Glass of Milk: The classic pairing! A tall glass of cold milk enhances the flavors of the cookies, balancing the sweetness and providing a comforting experience—great for kids and adults alike.
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Coffee or Espresso: For a more sophisticated pairing, enjoy these cookies with a rich cup of coffee or a shot of espresso. The bittersweet notes contrast beautifully with the sweet and gooey flavors of the cookies.
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Fresh Fruit Salad: A burst of freshness! Serve alongside a colorful fruit salad for a refreshing contrast. The natural sweetness of fruit balances the cookies’ richness while adding a hint of tartness.
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Chocolate Dipping Sauce: For chocolate lovers, drizzle melted chocolate over the cookies or serve as a dipping sauce. This indulgent touch adds an extra layer of decadence!
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Ice Cream Sandwich: Create a fun dessert by sandwiching a scoop of vanilla or chocolate ice cream between two Fluffernutter Cookies. This delightful treat will take you back to sunny summer days!
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Homemade Whipped Cream: Light and fluffy whipped cream is a lovely topping that complements the cookies’ textures. A dollop on the side is perfect for those who love creamy delights!
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Salted Caramel Sauce: Drizzle salted caramel sauce over the cookies or serve it on the side for a sweet and salty contrast that perfectly complements the flavors in every bite.
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Nutella Spread: A spoonful of Nutella pairs wonderfully with these cookies, enhancing their nutty flavor with smooth chocolatey goodness—it’s a match made in dessert heaven!
Expert Tips for Fluffernutter Cookies
Frozen Marshmallows: Make sure to freeze the mini marshmallows for at least 1-2 hours before baking. This prevents them from melting too much during the baking process.
Butter Temperature Matters: Use room temperature butter for easier mixing. If your butter is too warm or melted, it can lead to overly flat cookies.
Avoid Overmixing: When combining wet and dry ingredients, mix just until blended. Overmixing can create dense cookies instead of the desired soft and chewy Fluffernutter Cookies.
Uniform Cookie Size: Use a cookie scoop for even portions. This ensures all your cookies bake uniformly, resulting in a consistent texture throughout.
Cool on the Sheet: Let the cookies cool on the baking sheet for about 10 minutes before transferring them to a wire rack. This helps them set up while keeping that gooey center intact.
How to Store and Freeze Fluffernutter Cookies
Airtight Container: Store your Fluffernutter Cookies in an airtight container at room temperature for up to 5 days to maintain their soft and chewy texture.
Fridge: If you prefer longer storage, keep the cookies in the fridge for up to 1 week, but bring them to room temperature before enjoying for the best texture.
Freezer: For longer-term storage, freeze cookies in a single layer on a baking sheet, then transfer them to an airtight container or freezer bag. They can be frozen for up to 3 months.
Reheating: To bring back that fresh-baked goodness, heat cookies in the microwave for 10-15 seconds until warm and gooey, perfect for indulging any time!
Fluffernutter Cookies Variations & Substitutions
Ready to tailor your Fluffernutter Cookies? Elevate your baking experience with these delightful twists!
- Nut-Free: Use sunflower seed butter instead of peanut butter for a deliciously nut-free option that everyone can enjoy.
- Choco-Crammed: Mix in semi-sweet chocolate chips to add a sweet, creamy touch to the cookie dough for a flavor explosion.
- Oatmeal Twist: Substitute half of the all-purpose flour with oats to create a chewy texture reminiscent of oatmeal cookies.
- Double Marshmallow Delight: Use marshmallow fluff as a filling for an extra gooey experience; simply scoop it into the center of the dough before baking.
- Spiced Sugar: Add a pinch of cinnamon or nutmeg to the dough for a warm, cozy flavor that makes these cookies even more inviting.
- Caramel Drizzle: Drizzle melted caramel over the cookies after baking to add a sweet, buttery flavor contrast with just the right amount of richness.
- Crunchy Twist: Incorporate crushed pretzels or nuts into the dough for a delightful crunchy texture that complements the soft cookies beautifully.
Feeling inspired? If you love cookies, you might enjoy my Cinnamon Roll Cookies or the rich flavors of Marshmallow Swirl Cookies!

Fluffernutter Cookies Recipe FAQs
What is the best way to select ripe ingredients for Fluffernutter Cookies?
Absolutely! For the best results, use room temperature unsalted butter as it blends smoothly into the dough. When it comes to peanut butter, choose a creamy variety with no added sugar for a healthier twist. If using mini marshmallows, make sure they’re fresh and not overly sticky—look for those that are plump without dark spots.
How should I store Fluffernutter Cookies, and how long do they last?
I recommend storing your Fluffernutter Cookies in an airtight container at room temperature for up to 5 days. This will keep them soft and chewy. If you’d like to extend their shelf life, you can refrigerate them for up to a week; just remember to bring them back to room temperature for the best texture!
Can Fluffernutter Cookies be frozen, and how?
Definitely! To freeze your Fluffernutter Cookies, start by laying them out in a single layer on a baking sheet and pop them in the freezer until they’re solid, about 1-2 hours. Once frozen, transfer them to an airtight container or freezer bag, where they can last for up to 3 months. When you’re ready to enjoy, just reheat in the microwave for about 10-15 seconds until warm!
What should I do if my cookies spread too much while baking?
If you notice your cookies spreading more than expected, the most common culprit is butter that’s too warm or melted. Ensure your butter is just soft enough to mix, not melted. You can also try chilling the dough for 30 minutes before baking to help retain their shape better.
Are there any dietary considerations with Fluffernutter Cookies for allergies?
Absolutely! If you’re baking for those with nut allergies, you can easily substitute peanut butter with almond or sunflower seed butter. Additionally, if using marshmallows, check for gluten-free or vegan versions if necessary. Always read ingredient labels to ensure they comply with dietary restrictions.
Can I adapt the recipe for Fluffernutter Cookies with additional ingredients?
Yes, the more, the merrier! You can personalize your Fluffernutter Cookies by mixing in chocolate chips, or even topping them with a Hershey’s kiss before baking for added sweetness. You can also incorporate oats for a chewier texture or even swap in some flour for puffed rice for a fun twist!

Irresistibly Soft Fluffernutter Cookies for Sweet Moments
Ingredients
Equipment
Method
- Prepare Marshmallows: Freeze mini marshmallows for 1-2 hours before baking.
- Preheat Oven: Preheat your oven to 350°F (175°C) and line two baking sheets.
- Mix Dry Ingredients: In a bowl, whisk together the flour, baking soda, and salt.
- Cream Butter and Sugars: In a stand mixer, cream the butter, granulated sugar, and brown sugar.
- Combine Wet Ingredients: Add peanut butter, egg, and vanilla to the mixture and mix well.
- Incorporate Dry Ingredients: Gradually add the flour mixture, mixing until just combined.
- Fold in Marshmallows: Gently fold in the frozen marshmallows.
- Shape Cookies: Form dough into balls and place them on the baking sheets.
- Bake: Bake for 11-12 minutes until edges are golden.
- Cooling: Cool on baking sheets for about 10 minutes before transferring.

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