Name: Soft and Chewy Fluffernutter Cookies
Prep time: 20 min
Cook time: 12 min
Total time: 32 min
Cuisine: American
Ingredients: 2 1/4 cups all-purpose flour; 1 teaspoon baking soda; 1/2 teaspoon salt; 3/4 cup unsalted butter, softened; 1/2 cup granulated sugar; 3/4 cup brown sugar; 3/4 cup creamy peanut butter; 2 large eggs; 2 teaspoons vanilla extract; 1 cup peanut butter chips; 1 cup mini marshmallows; 1/2 cup marshmallow fluff; Flaky sea salt for topping (optional)

I still remember the first time I made these Soft and Chewy Fluffernutter Cookies on a rainy afternoon when I wanted something nostalgic, cozy, and just a little over-the-top in the best way possible. The combination of creamy peanut butter, gooey marshmallow fluff, and buttery cookie dough creates a dessert that feels comforting from the very first bite. Every batch disappears quickly in my kitchen because the texture stays perfectly soft in the center with lightly crisp edges.

What I love most about these cookies is how they balance sweetness with rich peanut butter flavor without becoming too heavy. The marshmallow pockets melt beautifully into the dough while peanut butter chips add extra creaminess throughout. Whether you bake them for family gatherings, holidays, bake sales, or a weekend treat, these cookies always steal the spotlight.

Why You’ll Love This Soft and Chewy Fluffernutter Cookies Recipe

These cookies have an irresistible bakery-style texture that stays soft for days instead of turning dry or crumbly.

The peanut butter and marshmallow combination creates a nostalgic flavor that tastes like a childhood sandwich transformed into an indulgent dessert.

They are easy enough for beginner bakers while still impressive enough to serve at parties or special occasions.

The recipe uses simple pantry ingredients, making it convenient whenever a cookie craving strikes.

Every bite has layers of flavor and texture thanks to the gooey marshmallow pieces, rich peanut butter chips, and buttery cookie dough.

What Kind of Peanut Butter Should I Use for Soft and Chewy Fluffernutter Cookies?

Classic creamy peanut butter works best for this recipe because it blends smoothly into the dough and creates a rich, balanced flavor. Traditional shelf-stable peanut butter gives the cookies a consistent texture and helps them bake evenly.

Natural peanut butter can also work, but it may slightly change the texture because of the extra oil separation. If using natural peanut butter, stir it very well before measuring so the dough does not become greasy or dry.

Chunky peanut butter is another option if you enjoy extra crunch throughout the cookies. The small peanut pieces add texture and make the cookies feel even heartier.

Options for Substitutions

If you do not have peanut butter chips, white chocolate chips or butterscotch chips make delicious alternatives while still keeping the cookies rich and sweet.

Mini marshmallows can replace marshmallow fluff if needed. Freezing the marshmallows before mixing them into the dough helps prevent excessive melting while baking.

For a nuttier flavor, almond butter or cashew butter can substitute for peanut butter. The final taste will change slightly, but the cookies will still stay soft and chewy.

Gluten-free all-purpose flour blends work well if you need a gluten-free version. Choose a blend designed for baking cookies to maintain the soft texture.

Brown sugar can replace part of the granulated sugar for deeper caramel flavor and extra moisture in the dough.

Ingredients for This Soft and Chewy Fluffernutter Cookies Recipe

All-Purpose Flour

Flour gives the cookies their structure and helps create the perfect balance between soft centers and lightly golden edges. Measuring the flour correctly is important so the cookies stay tender instead of dry.

Baking Soda

Baking soda helps the cookies rise slightly while keeping the texture chewy and soft. It also encourages beautiful golden coloring during baking.

Salt

A small amount of salt balances the sweetness and enhances the rich peanut butter flavor throughout the cookies.

Unsalted Butter

Butter creates a rich, bakery-style texture and gives the cookies their soft and buttery flavor. Using softened butter helps the dough mix smoothly and evenly.

Granulated Sugar

Granulated sugar adds sweetness and helps the cookies spread properly while baking.

Brown Sugar

Brown sugar adds moisture, chewiness, and a subtle caramel flavor that pairs perfectly with peanut butter and marshmallow.

Creamy Peanut Butter

Peanut butter is the signature ingredient that gives these cookies their classic fluffernutter flavor. It creates richness, softness, and a nutty aroma in every bite.

Eggs

Eggs bind the ingredients together while helping the cookies stay soft and tender after baking.

Vanilla Extract

Vanilla extract deepens the flavor and brings warmth and sweetness to the cookie dough.

Marshmallow Fluff

Marshmallow fluff creates gooey pockets throughout the cookies and gives them their iconic fluffernutter character.

Peanut Butter Chips

Peanut butter chips add bursts of creamy peanut butter flavor and make the cookies extra indulgent.

Mini Marshmallows

Mini marshmallows create soft melted spots inside the cookies and make them look irresistible once baked.

Optional Sea Salt Flakes

A light sprinkle of sea salt on top balances the sweetness and gives the cookies a bakery-style finish.

Step 1: Prepare the Baking Sheets and Oven

Preheat the oven to 350°F so the cookies bake evenly from the start. Line baking sheets with parchment paper to prevent sticking and make cleanup easier.

Allow the butter and eggs to come to room temperature before mixing. This helps the dough combine smoothly and creates a softer cookie texture.

Step 2: Combine the Dry Ingredients

In a medium bowl, whisk together the flour, baking soda, and salt until evenly combined. Mixing the dry ingredients separately ensures the baking soda distributes evenly throughout the dough.

Set the bowl aside while preparing the wet ingredients.

Step 3: Cream the Butter, Sugars, and Peanut Butter

In a large mixing bowl, beat the softened butter, granulated sugar, brown sugar, and peanut butter together until the mixture becomes light and fluffy.

This step is essential because creaming incorporates air into the dough, which helps create soft cookies with a tender texture.

Scrape down the sides of the bowl occasionally to ensure everything mixes evenly.

Step 4: Add the Eggs and Vanilla

Mix in the eggs one at a time, allowing each egg to fully incorporate before adding the next.

Stir in the vanilla extract until the dough looks smooth and creamy. The vanilla enhances the sweetness and gives the cookies a warm homemade flavor.

Step 5: Slowly Add the Dry Ingredients

Gradually add the flour mixture to the wet ingredients while mixing on low speed. Avoid overmixing because too much mixing can make the cookies dense instead of soft.

Stop mixing as soon as no dry streaks remain in the dough.

Step 6: Fold in the Peanut Butter Chips and Marshmallows

Using a spatula, gently fold the peanut butter chips and mini marshmallows into the cookie dough.

Be careful not to crush the marshmallows too much. Keeping them intact creates gooey melted pockets after baking.

If the dough feels sticky, chill it in the refrigerator for 20 to 30 minutes before baking. Chilling helps prevent the cookies from spreading too much in the oven.

Step 7: Scoop the Dough

Use a cookie scoop or spoon to portion the dough onto the prepared baking sheets.

Leave enough space between each cookie because the dough will spread while baking. Slightly flattening the tops helps the cookies bake more evenly.

For a bakery-style appearance, press a few extra peanut butter chips onto the tops of the dough balls before baking.

Step 8: Add Marshmallow Fluff

Drop small spoonfuls of marshmallow fluff onto the tops of the cookie dough.

Swirl the fluff lightly with a toothpick or leave it slightly uneven for a rustic homemade appearance. During baking, the marshmallow fluff melts into creamy pockets throughout the cookies.

Step 9: Bake the Cookies

Bake the cookies until the edges become lightly golden while the centers still look slightly soft.

Do not overbake them because the cookies continue to firm up as they cool on the baking sheet.

The marshmallow areas may puff slightly and turn lightly golden, adding extra texture and flavor.

Step 10: Cool Before Serving

Allow the cookies to cool on the baking sheet for several minutes before transferring them to a wire rack.

Cooling helps the cookies finish setting while keeping the centers soft and chewy.

Serve the cookies slightly warm for the ultimate gooey marshmallow experience.

Step 11: Optional Finishing Touches

For extra flavor, sprinkle flaky sea salt over the warm cookies.

You can also drizzle melted peanut butter over the tops or sandwich two cookies together with marshmallow fluff for an even more decadent dessert.

These cookies pair wonderfully with cold milk, hot coffee, or hot chocolate.

How Long to Prepare the Soft and Chewy Fluffernutter Cookies

Making these cookies is surprisingly simple, and most of the preparation time comes from mixing the dough carefully and allowing the ingredients to combine properly. Preparing the cookie dough usually takes about 20 minutes, especially if the butter is already softened and ready to use. Folding in the marshmallows and peanut butter chips only adds a few extra minutes, making the process feel quick and manageable even on busy days.

If you choose to chill the dough before baking, add another 20 to 30 minutes to the total preparation time. Chilling is optional, but it helps create thicker cookies with extra chewy centers and less spreading in the oven. Once baked, the cookies need around 10 minutes to cool slightly before serving so the marshmallow filling can settle without becoming too sticky.

Preparation Time

Preparing the dough, measuring the ingredients, and shaping the cookies typically takes about 20 minutes.

Chilling Time

Optional chilling time ranges from 20 to 30 minutes for thicker bakery-style cookies.

Baking Time

The cookies generally bake in about 10 to 12 minutes depending on their size and your oven.

Cooling Time

Allow the cookies to cool for at least 10 minutes before serving for the best texture.

Total Time

Including optional chilling, the full process usually takes around 1 hour from start to finish.

Tips for Perfect Soft and Chewy Fluffernutter Cookies

Using room-temperature ingredients helps the dough blend smoothly and evenly, creating a softer cookie texture.

Do not overmix the dough once the flour is added. Overmixing develops too much gluten and can make the cookies tough instead of tender.

Chilling the dough before baking helps prevent excessive spreading and creates thicker, chewier cookies.

For the best marshmallow texture, press a few marshmallows onto the tops of the cookies right before baking. This creates beautiful gooey pockets on the surface.

Slightly underbaking the cookies keeps the centers soft and chewy even after they cool.

Using parchment paper instead of greasing the baking sheet helps the cookies bake more evenly and prevents burnt bottoms.

If the marshmallow fluff becomes difficult to handle, lightly grease the spoon with cooking spray before scooping.

For extra flavor depth, add a tiny pinch of cinnamon or a small splash of maple extract to the dough.

Store the cookies with a slice of bread in the container to help maintain their softness for several days.

Watch Out for These Mistakes While Cooking

Adding too much flour is one of the most common baking mistakes. Excess flour makes the cookies dry and crumbly instead of soft and chewy.

Overbaking can quickly ruin the texture. The cookies should still look slightly soft in the center when removed from the oven because they continue cooking as they cool.

Using cold butter can prevent the dough from creaming properly, leading to dense cookies with uneven texture.

Placing too much marshmallow fluff in one area may cause excessive melting and sticking during baking.

Skipping the parchment paper can make melted marshmallow difficult to remove from the baking tray.

Crowding the baking sheet prevents proper air circulation and may cause the cookies to bake unevenly.

Using natural peanut butter without stirring it well can result in oily or inconsistent dough.

Opening the oven door too often while baking can lower the oven temperature and affect the final texture.

What to Serve With Soft and Chewy Fluffernutter Cookies?

Cold Milk

A glass of cold milk perfectly balances the sweetness and rich peanut butter flavor of the cookies.

Hot Chocolate

Warm hot chocolate creates an extra cozy dessert experience, especially during colder months.

Vanilla Ice Cream

Serving these cookies with vanilla ice cream turns them into an indulgent dessert sandwich or plated treat.

Coffee or Espresso

The bold flavor of coffee pairs beautifully with the sweetness of marshmallow and peanut butter.

Fresh Fruit

Fresh strawberries, bananas, or apple slices provide a refreshing contrast to the rich cookie texture.

Storage Instructions

Room Temperature Storage

Store the cookies in an airtight container at room temperature for up to 5 days. Keeping them sealed properly helps maintain their soft texture and prevents them from drying out.

Placing parchment paper between layers prevents the marshmallow sections from sticking together.

Refrigerator Storage

If your kitchen is warm, refrigerating the cookies can help the marshmallow filling stay firmer. Store them in a tightly sealed container for up to 1 week.

Before serving, allow the cookies to sit at room temperature for several minutes so they soften again.

Freezing Instructions

These cookies freeze very well both before and after baking.

To freeze unbaked dough, scoop the dough into portions and freeze them on a baking tray until solid. Transfer the frozen dough balls to a freezer-safe bag and store for up to 3 months.

Baked cookies can also be frozen in airtight containers with parchment paper between layers. Thaw them at room temperature or warm them slightly in the microwave before serving.

Estimated Nutrition

Per Cookie Approximation

Calories: 220
Carbohydrates: 28g
Protein: 5g
Fat: 10g
Saturated Fat: 4g
Sugar: 18g
Fiber: 1g
Sodium: 140mg

Nutrition values may vary depending on the exact brands and ingredient substitutions used.

Frequently Asked Questions

Can I make Soft and Chewy Fluffernutter Cookies ahead of time?

Yes, the dough can be prepared ahead and refrigerated for up to 48 hours before baking. This can even improve the flavor and texture.

Why did my marshmallows melt too much?

Marshmallows naturally melt quickly in the oven. Freezing mini marshmallows before mixing them into the dough can help them hold their shape better.

Can I freeze the cookie dough?

Absolutely. Portion the dough into cookie balls and freeze them for convenient baking later.

How do I keep the cookies soft for days?

Store them in an airtight container and avoid overbaking them initially.

Can I use crunchy peanut butter instead of creamy?

Yes, crunchy peanut butter works well and adds extra texture to the cookies.

Conclusion

Soft and Chewy Fluffernutter Cookies combine everything people love about classic comfort desserts into one irresistible treat. The rich peanut butter flavor, gooey marshmallow pockets, and soft bakery-style texture make these cookies perfect for holidays, parties, family gatherings, or everyday cravings.

One of the best things about this recipe is how adaptable and beginner-friendly it is. You can customize the ingredients, freeze the dough for later, or experiment with extra mix-ins while still achieving delicious results. Whether enjoyed warm with a glass of milk or shared with friends and family, these cookies are guaranteed to become a favorite after the very first batch.