Soft and Chewy Fluffernutter Cookies Recipe
Introduction
Soft and chewy Fluffernutter cookies combine the classic flavors of peanut butter and marshmallow fluff into a delightful treat. These cookies offer a perfect balance of sweetness and texture that’s sure to please any dessert lover.

Ingredients
- 1 cup creamy peanut butter
- 1 cup granulated sugar
- 1 cup brown sugar, packed
- 2 large eggs
- 1 teaspoon vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup marshmallow fluff
Instructions
- Step 1: Preheat your oven to 350°F (175°C).
- Step 2: In a large bowl, mix together the peanut butter, granulated sugar, and brown sugar until smooth.
- Step 3: Add the eggs and vanilla extract, mixing until well combined.
- Step 4: In a separate bowl, whisk together the flour, baking soda, and salt.
- Step 5: Gradually add the dry ingredients to the wet ingredients, stirring until just combined.
- Step 6: Gently fold in the marshmallow fluff, being careful not to overmix.
- Step 7: Drop spoonfuls of dough onto a baking sheet lined with parchment paper, spacing them a few inches apart.
- Step 8: Bake for 10–12 minutes, or until the edges are lightly golden.
- Step 9: Allow the cookies to cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.
Tips & Variations
- For extra gooey centers, slightly underbake the cookies and let them finish setting on the baking sheet.
- Substitute natural peanut butter for a more intense, nutty flavor.
- Add chopped peanuts or chocolate chips for added texture and flavor.
- If marshmallow fluff is unavailable, try using mini marshmallows folded into the dough.
Storage
Store the cookies in an airtight container at room temperature for up to 5 days. To keep them soft, place a slice of bread in the container to maintain moisture. Reheat briefly in the microwave if desired to soften further.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use crunchy peanut butter instead of creamy?
Yes, crunchy peanut butter will work and add a bit of extra texture, but it might make the cookies slightly less smooth.
What if I don’t have marshmallow fluff?
You can substitute mini marshmallows folded into the dough, though the texture will be a little different. Melted marshmallows can also be mixed gently but may change the batter consistency.
Print
Soft and Chewy Fluffernutter Cookies Recipe
- Total Time: 27 minutes
- Yield: 24 cookies 1x
- Diet: Vegetarian
Description
Soft and Chewy Fluffernutter Cookies combine the rich flavor of creamy peanut butter with the sweet, gooey texture of marshmallow fluff, creating a delightful treat that is easy to make and perfect for any occasion. These cookies are chewy on the inside with a slight crisp around the edges, offering a nostalgic and comforting taste that peanut butter and marshmallow lovers will adore.
Ingredients
Wet Ingredients
- 1 cup creamy peanut butter
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 cup marshmallow fluff
Dry Ingredients
- 1 cup granulated sugar
- 1 cup brown sugar, packed
- 2 cups all-purpose flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
Instructions
- Preheat Oven: Preheat your oven to 350°F (175°C) to prepare for baking the cookies at the right temperature.
- Mix Wet Ingredients: In a large bowl, combine the creamy peanut butter, granulated sugar, and brown sugar. Mix until smooth and creamy.
- Add Eggs and Vanilla: Crack the eggs into the bowl with the peanut butter mixture, add the vanilla extract, and mix thoroughly until well combined.
- Prepare Dry Ingredients: In a separate bowl, whisk together the all-purpose flour, baking soda, and salt to evenly distribute the leavening agent and salt.
- Combine Mixtures: Gradually add the dry ingredients into the wet ingredients, mixing until just combined. Avoid overmixing to keep the cookies tender.
- Fold in Marshmallow Fluff: Gently fold in the marshmallow fluff into the cookie dough, incorporating it well without deflating the fluff’s texture.
- Shape Cookies: Drop spoonfuls of cookie dough onto a baking sheet lined with parchment paper, spacing them evenly to allow for spreading.
- Bake: Bake in the preheated oven for 10-12 minutes or until the edges are lightly golden, indicating they are cooked but still soft.
- Cool: Let the cookies cool on the baking sheet for a few minutes to set before transferring them to a wire rack to cool completely, which helps retain their chewy texture.
Notes
- For best results, do not overbake to maintain the chewy texture.
- You can substitute creamy peanut butter with natural peanut butter, but the texture may be slightly different.
- Store cookies in an airtight container at room temperature for up to 5 days.
- Adding a sprinkle of flaky sea salt on top before baking can enhance the flavor profile.
- Prep Time: 15 minutes
- Cook Time: 12 minutes
- Category: Desserts
- Method: Baking
- Cuisine: American
Keywords: Fluffernutter cookies, peanut butter cookies, marshmallow fluff cookies, chewy cookies, soft cookies, dessert recipe, easy cookies

