Easy Fluffernutter Cookie Recipe

November 20, 2025
Delicious homemade Fluffernutter cookies with marshmallow and peanut butter filling on a baking tray.

These Easy Fluffernutter Cookies are a warm, gooey treat that mixes peanut butter and marshmallow fluff. They’re soft, sweet, and oh-so-delicious!

Making these cookies is super simple! I love how they fill my kitchen with a lovely smell and disappear quickly when served. You might want to make extra! 😉

Key Ingredients & Substitutions

Creamy Peanut Butter: This is the star of the show! If you’re allergic to peanuts, you can use almond butter or sunflower seed butter instead. Just remember, a thicker spread might change the texture a bit.

Granulated Sugar: Regular sugar is what I recommend for sweetness, but you can swap it with brown sugar for a deeper flavor. Coconut sugar is another great alternative if you’re looking for a less processed option.

Marshmallow Fluff: This gives the cookies a delightful creaminess. If you can’t find marshmallow fluff, you can make your own by mixing melted marshmallows with a little bit of corn syrup while still warm.

Vanilla Extract: It adds a nice aroma. You can skip it if you don’t have any, but I think a splash of almond extract also works well for a unique twist!

How Do I Ensure the Perfect Cookie Texture?

The key to fluffy cookies is to not overbake them. Keep an eye on the edges; they should be lightly golden, while the centers might look a little undercooked. They’ll firm up as they cool!

  • Preheating your oven is crucial for even baking.
  • Do not flatten the dough too much; just a gentle press will do.
  • Let cookies cool on the baking sheet before transferring them to a wire rack; this prevents breaking.

Easy Fluffernutter Cookie Recipe

Easy Fluffernutter Cookies

Ingredients You’ll Need:

  • 1 cup creamy peanut butter
  • 1 cup granulated sugar
  • 1 large egg
  • 1 teaspoon baking soda
  • 1/2 teaspoon vanilla extract
  • 1 cup marshmallow fluff (marshmallow creme)
  • 1 tablespoon peanut butter (for filling and topping)

How Much Time Will You Need?

This recipe takes about 15 minutes for prep and around 10 minutes for baking. After baking, let the cookies cool for about 5 minutes on the baking sheet, and then let them cool completely on a wire rack. So, you’re looking at roughly 30 minutes total before you indulge in these delicious cookies!

Step-by-Step Instructions:

1. Preheat the Oven and Prepare the Baking Sheet:

Start by preheating your oven to 350°F (175°C). While it heats up, take a baking sheet and line it with parchment paper to prevent the cookies from sticking.

2. Mix the Cookie Dough:

In a large bowl, combine the creamy peanut butter, granulated sugar, large egg, baking soda, and vanilla extract. Use a spoon or mixer to combine everything until the mixture is smooth and creamy.

3. Form the Cookies:

Scoop out tablespoons of the dough and place them onto the prepared baking sheet, making sure to leave about 2 inches of space between each cookie. Lightly flatten each scoop with the back of a fork, creating a crisscross pattern on top.

4. Bake the Cookies:

Slide the baking sheet into the preheated oven and bake for 8-10 minutes. You want the edges to be lightly golden while the centers look soft. When they’re ready, take them out and let them cool on the baking sheet for about 5 minutes.

5. Assemble the Sandwiches:

Once the cookies are cool to the touch, take one cookie and spread about 1 tablespoon of marshmallow fluff on its flat side. Then, place another cookie on top to create a sandwich. Repeat this with the remaining cookies.

6. Drizzle with Peanut Butter:

For added deliciousness, use a small spoon or knife to drizzle a bit of peanut butter over the marshmallow filling on top of each sandwich.

7. Serve and Enjoy:

Now, your soft, fluffy fluffernutter cookies are ready to enjoy! Serve them right away or store them in an airtight container. They make a perfect treat for sharing or for a cozy snack at home!

These cookies combine the classic peanut butter cookie base with sweet marshmallow fluff filling, all topped with just a touch of peanut butter drizzle. Enjoy every fluffy bite!

Can I Use Natural Peanut Butter Instead?

Yes, you can use natural peanut butter, but keep in mind that it may result in a different texture. Natural peanut butter is often thinner and can lead to softer cookies. You may need to adjust the amount of sugar slightly for balance.

How Should I Store Leftover Cookies?

Store any leftover fluffernutter cookies in an airtight container at room temperature for up to 3 days. If you want them to last longer, you can refrigerate them, but they may lose some softness.

Can I Make These Cookies Gluten-Free?

Absolutely! To make gluten-free fluffernutter cookies, simply use a gluten-free all-purpose flour blend in place of the granulated sugar. This recipe is actually gluten-free as written since it doesn’t contain any flour, so you’re good to go!

Can I Freeze These Cookies?

Yes, you can freeze the cookies! To do this, allow them to cool completely, then place them in an airtight container or a freezer bag. They can be frozen for up to 3 months. Just let them thaw at room temperature before enjoying!

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