Soft and Chewy Fluffernutter Cookies

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If you’re the kind of person who eats peanut butter straight from the jar or finds yourself sneaking marshmallows from the pantry, these Soft and Chewy Fluffernutter Cookies were made for you. Imagine a buttery, golden cookie base swirled with gooey marshmallow and rich peanut butter chips, all crowned with a touch of flaky sea salt. These cookies are everything a dessert lover dreams of—chewy in the middle, slightly crisp at the edges, and packed with that iconic peanut butter and fluff duo.

Perfect for bake sales, movie nights, or a cozy weekend treat, these cookies bring nostalgic joy with every bite. The recipe is easy to follow and guarantees bakery-style cookies without leaving your kitchen. Whether you’re baking for yourself or to share, these fluffernutter cookies deliver big flavor and bigger smiles.

Why You’ll Love This Fluffernutter Cookie Recipe

• Chewy texture with crispy edges
• Sweet and salty flavor balance
• Quick and simple to make
• No chill time needed
• Fun twist on classic peanut butter cookies

What Kind of Peanut Butter Should I Use?

For this recipe, stick with creamy, processed peanut butter like Jif or Skippy. Natural peanut butter can separate and affect the dough texture. We also use peanut butter chips for pockets of rich flavor, so no need for chunky peanut butter.

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Ingredients for the Soft and Chewy Fluffernutter Cookies

Each ingredient in this recipe has a purpose, creating cookies that are soft, chewy, and bursting with peanut butter and marshmallow flavor.

• 1/2 cup unsalted butter (softened): Provides richness and the tender base for our cookies.
• 1/2 cup brown sugar (packed): Adds moisture and deep flavor.
• 1/4 cup granulated sugar: Balances the brown sugar with crispness.
• 1 large egg: Binds the dough together for structure.
• 1 tsp vanilla extract: Enhances the overall sweetness.
• 1/2 cup creamy peanut butter: Delivers that classic nutty base.
• 1 1/4 cups all-purpose flour: The structure of the cookie.
• 1/2 tsp baking soda: Lifts the dough for lightness.
• 1/4 tsp salt: Balances sweetness.
• 3/4 cup peanut butter chips: For bursts of rich peanut flavor.
• 3/4 cup marshmallow fluff: Swirled in for gooey texture and sweet contrast.
• Flaky sea salt for topping: Optional, but it brings the flavor full circle.

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How To Make the Soft and Chewy Fluffernutter Cookies

Step 1: Cream Butter, Sugars, and Peanut Butter

In a large bowl, beat the softened butter, brown sugar, and granulated sugar until light and fluffy. Add the peanut butter and beat again until well combined.

Step 2: Add Wet Ingredients

Mix in the egg and vanilla extract. Scrape down the sides of the bowl to ensure everything is blended.

Step 3: Add Dry Ingredients

Stir in flour, baking soda, and salt until just combined. Don’t overmix the dough.

Step 4: Fold in Peanut Butter Chips

Use a spatula to gently fold in the peanut butter chips.

Step 5: Swirl in Marshmallow Fluff

Add dollops of marshmallow fluff and swirl it into the dough with a knife or spoon. Be gentle to avoid fully mixing it in.

Step 6: Scoop and Shape

Use a cookie scoop to portion the dough into 2-tablespoon-sized balls. Place them on a parchment-lined baking sheet, leaving space to spread.

Step 7: Bake and Finish

Bake at 350°F (175°C) for 10-11 minutes, until the edges are set and the centers look slightly underbaked. Remove from oven and immediately sprinkle with flaky sea salt. Cool on the tray for 5 minutes before transferring to a wire rack.

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Serving and Storing These Cookies

This recipe makes 12 large cookies, which is perfect for feeding 6 to 8 people (depending on how many cookies they grab!). Serve them warm with a glass of milk or a hot latte for the ultimate cozy snack.

To store, place cooled cookies in an airtight container at room temperature for up to 5 days. They can also be frozen for up to 2 months—just thaw at room temp and enjoy.

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What to Serve With Fluffernutter Cookies?

Peanut Butter Icing

Drizzle some over the top for a super indulgent treat. Try our Peanut Butter Icing recipe.

S’mores Cookie Bars

Pair these fluffernutter cookies with our S’mores Cookie Bars for a dessert tray kids and adults will love.

Heaven in a Bowl

Make a dessert board and add a scoop of Heaven in a Bowl for a layered delight.

Warm Drinks

Coffee, hot chocolate, or even a peanut butter banana smoothie complement these cookies beautifully.

Cheesy Tomato Tortellini Soup

For a sweet and savory pairing, serve these cookies as a surprise dessert after a cozy bowl of Cheesy Tomato Tortellini Soup.

Ice Cream Sandwiches

Use the cookies to sandwich vanilla or peanut butter ice cream for an extra-decadent treat.

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Frequently Asked Questions

Can I use marshmallows instead of marshmallow fluff?

It’s not recommended. Marshmallow fluff stays gooey even after baking, while regular marshmallows melt and disappear into the dough.

Can I freeze the dough?

Yes! Scoop the dough balls (with the fluff already swirled in) and freeze them on a tray. Once solid, transfer to a freezer bag. Bake straight from frozen, adding 1-2 minutes to the bake time.

Why did my cookies spread too much?

Too-soft butter or overly warm dough can cause excess spreading. Make sure your butter is softened, not melted, and chill the dough for 15 minutes if your kitchen is warm.

Can I double the recipe?

Absolutely. Double all ingredients exactly as listed for a larger batch. Just be sure to mix well and use two baking sheets.

Are these cookies nut-free?

No, they contain peanut butter and peanut butter chips. For a nut-free option, try our Chocolate Chip Snowball Cookies.

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Save This Pin For Later

📌 Save this recipe to your Pinterest dessert board so you can come back to it any time.
And let me know in the comments how yours turned out. Did you use chunky peanut butter? Did you add a chocolate drizzle?

I love hearing how others make these recipes their own. Questions are welcome too, let’s help each other bake smarter. You can find more daily treats over on Life With Rosa on Pinterest.

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Conclusion

Soft and Chewy Fluffernutter Cookies are everything we love about classic American sweets: comfort, nostalgia, and bold peanut butter flavor with a twist. The recipe is simple, the ingredients are pantry staples, and the results are unforgettable. Whether you’re hosting friends or indulging solo, these cookies promise joy in every bite.

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