Fluffernutter Cookies

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I believe snacks deserve grand gestures. Also I believe you should never trust a marshmallow and a jar of peanut butter alone in a kitchen—unless you’re emotionally prepared. Somehow Fluffernutter Cookies are both a comfort-trap and a tiny edible dare (also trending again because nostalgia is a content machine), and yes I will fight anyone who says a sandwich is enough. If you want something to steal technique ideas from, check out this take on the best homemade chocolate chip cookies because sometimes cookie logic is transferable (shockingly).

Kitchen Calamity and the Great Fluff Explosion

Okay — so listen. There was a night I tried to DIY these and it smelled like roasted peanuts and tiny betrayal. The first batch oozed fluff like a slow-motion marshmallow euthanasia (is that morbid? maybe). The dough sounded wrong in the bowl — like it was whispering secrets. Texture was both cakey and criminally underbaked; teeth met cookie and everything wanted to stick to my molars. I left a trail of sticky fingerprints from the counter to the sofa. Embarrassing? Yes. Adhesive? Also yes.

I thought, maybe I should add flour. Then I thought, maybe I should have a crying session and watch a romcom. So I did both. The kitchen bore witness. The smoke alarm did not go off (miracle). The cookies, however, looked like confused lumps. People who visited later asked if I was hosting modern art. I still have one tray in the back of my freezer that I keep meaning to bury but can’t because nostalgia wins again.

How I finally stopped making a gooey mess

What changed: patience (shocking), a tweaked ratio, and the realization that marshmallow fluff is a diva — it wants to poof, not melt. Also I stopped trying to "improve" everything with extra eggs because NO. Emotionally I stopped being embarrassed and started being curious. Practically I measured like a person who pays taxes on time (for once).

The trick that made these Fluffernutter Cookies behave was tucking the fluff in the center like a secret, not smearing it on top like a frosting misdemeanor. Also, the bake time — edges golden, center soft — is the whole drama: underbake by a minute for chew, overbake and you get regret. I still doubt myself at step three, every time. But then I bite one and the doubt is mostly nostalgic.

Also, very useful parallel: sometimes the method from the best homemade chocolate chip cookies taught me how much to trust dough texture (it’s weirdly transferable). Learning curve? Eight batches and one friend who will never speak to me again about his ruined lunch.

What goes in them (and why I hoard peanut butter)

  • 1 cup peanut butter
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar
  • 1 large egg
  • 1 tsp vanilla extract
  • 1/2 tsp baking soda
  • 1/4 tsp salt
  • 1 cup marshmallow fluff

Budget and texture notes: use natural-ish peanut butter if you want more flavor (and more trouble spreading), or the cheap jar if you’re budgeting. Fluff availability? Usually fine, but stock up if your family does late-night snacking. Also, brown sugar gives chew, granulated gives structure — both needed. I keep an emergency jar of peanut butter like it’s a pet.

How we actually make them (short and emotional)

  • Preheat your oven to 350°F (175°C).
  • In a mixing bowl, combine peanut butter, granulated sugar, brown sugar, egg, vanilla extract, baking soda, and salt. Mix until well combined.
  • Take a tablespoon of dough and flatten it slightly in your palm. Place a spoonful of marshmallow fluff in the center and fold the edges of the dough around the fluff, rolling it into a ball.
  • Place the cookie balls on a baking sheet lined with parchment paper, spacing them about 2 inches apart.
  • Bake for 10-12 minutes, until the edges are lightly golden but the centers are still soft.
  • Remove from the oven and let cool for a few minutes before transferring them to a wire rack to cool completely.

Non-linear explanation: you will probably be tempted to spoon fluff on top (DON’T). Also, if the dough is too sticky, chill five minutes — or have a tantrum — either works. Pro tip? Use a little oil on your hands if you want prettier balls. Also? Eat one warm. I won’t stop you.

Fluffernutter Cookies

If your house is anything like mine, this will happen

Will the kids steal them? Yes. Will someone call them cookies when they are actually comfort therapy? Absolutely. Do you need to hide them in Tupperware and lie about the contents? Sometimes moral flexibility is required. Have you ever been judged by crumbs at 10 p.m.? I have. Also, if you want a science lesson in why not to skip parchment, I will gladly link you to evidence — like the time I used foil and everything fused into a single, sorrowful cookie. For technique inspiration (because we all crib from the internet like students), I still revisit this best homemade chocolate chip cookies piece for dough feel references, even though it’s not about fluff.

Talk to me: do you pinch the seams closed like a pro or just slap them together like a rebel? If your cat eats a fluff blob, is that a win? (Asking for a friend.)

Stuff you probably want to know (but also don’t)

Sure. Crunchy adds texture and personality. Cookies will be chunkier and slightly less cohesive, but honestly? I like that.

If you seal the dough well, it mostly stays put. Some fluff might peep out like a shy cameo, but it’s not a meltdown.

Yes. Chill the dough for up to 48 hours or freeze balls before baking. Thaw in the fridge overnight if frozen. Procrastination-friendly.

Extremely. They are also weaponized nostalgia, so proceed with caution. Expect sticky faces and requests for more.

Airtight container at room temp for two days, or in the fridge longer. If you reheat gently, the fluff gets dreamy again.

I think food remembers us — like, we touch it, we burn it, we hug it, and it comes back slightly better (or worse) and we keep going. Also, confession: I sometimes make a single cookie and pretend it’s a dinner party. That’s not normal. Or maybe it is. Either way, if you make them and someone cries happy tears, tell me. Or don’t. I’m going to go check the oven because I could have sworn I—

Print
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Fluffernutter Cookies


  • Author: courtney-editor
  • Total Time: 27 minutes
  • Yield: 24 cookies 1x
  • Diet: Vegetarian

Description

Delicious and nostalgic cookies filled with marshmallow fluff and peanut butter, perfect for a sweet treat.


Ingredients

Scale
  • 1 cup peanut butter
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar
  • 1 large egg
  • 1 tsp vanilla extract
  • 1/2 tsp baking soda
  • 1/4 tsp salt
  • 1 cup marshmallow fluff

Instructions

  1. Preheat your oven to 350°F (175°C).
  2. Combine peanut butter, granulated sugar, brown sugar, egg, vanilla extract, baking soda, and salt in a mixing bowl. Mix until well combined.
  3. Take a tablespoon of dough and flatten it slightly in your palm. Place a spoonful of marshmallow fluff in the center and fold the edges of the dough around the fluff, rolling it into a ball.
  4. Place the cookie balls on a baking sheet lined with parchment paper, spacing them about 2 inches apart.
  5. Bake for 10-12 minutes, until the edges are lightly golden but the centers are still soft.
  6. Remove from the oven and let cool for a few minutes before transferring them to a wire rack to cool completely.

Notes

For prettier cookie balls, use a little oil on your hands. Cookies can be stored in an airtight container at room temperature for two days, or in the fridge longer.

  • Prep Time: 15 minutes
  • Cook Time: 12 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 cookie
  • Calories: 180
  • Sugar: 12g
  • Sodium: 150mg
  • Fat: 9g
  • Saturated Fat: 2g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 22g
  • Fiber: 1g
  • Protein: 4g
  • Cholesterol: 30mg

Keywords: Fluffernutter, cookies, peanut butter, marshmallow fluff, dessert