
Soft toasted marshmallows and peanut butter chocolate candy bars top pillowy cookies made from yellow cake mix, cream cheese, and peanut butter for an irresistible after-school treat.

This recipe for Peanut Butter Fluffernutter Cookies has been my quick-fix answer to busy afternoons and sudden cookie cravings. I first tested the combination during a weekend when school was back in session and I needed a fast, crowd-pleasing snack that would travel well to the soccer field. The dough is surprisingly simple — a box of yellow cake mix forms the base — but it becomes something special when swirled with peanut butter and cream cheese, baked into soft little rounds, crowned with a toasted marshmallow, and finished with a peanut butter chocolate candy bar. The textures are what make these cookies stand out: a tender, cake-like interior; a toasty, gooey marshmallow crown; and a chocolatey, slightly crunchy candy top. Every bite delivers nostalgia and playful contrast.
I remember the first tray I brought to a parent-teacher meet-and-greet: within minutes they were gone, and people kept asking for the recipe. Kids adore the toasted marshmallow surprise and parents love how easy these are to make in large batches. The recipe is forgiving: if you forget to chill the dough for the full hour, the cookies will still turn out; chilling simply helps the dough handle and keeps the cookies uniform. These are perfect for a lunchbox treat, an after-school snack, or a cookie jar staple that disappears fast.
I learned quickly that the toasted marshmallow is the showstopper — it creates that classic Fluffernutter vibe without extra fuss. My family’s favorite moment is when the candy bar slightly melts into the marshmallow, creating little pockets of chocolate-peanut butter that kids instinctively gravitate toward. This combination has turned casual afternoons into mini celebrations more than once.
My favorite part is the moment you press the candy bar into the warm marshmallow and see it slightly sink and glossy the surface; it’s a small, satisfying moment that feels almost celebratory. Bringing these to a neighborhood potluck once turned a casual block party into a sugar-fueled conversation starter: neighbors traded cookie halves and recipe notes by the dozen. That communal joy is why I keep this particular combination in my back pocket.
Store completely cooled cookies in a loosely sealed container at room temperature for 2 to 3 days. Because of the marshmallow topping, avoid airtight containers at room temperature that can cause stickiness; a container lined with parchment with a small gap in the lid keeps them fresh without flattening the topping. For longer storage, flash-freeze cookies in a single layer on a baking sheet for 1 hour, then transfer to a freezer-safe bag with parchment between layers to prevent sticking. Reheat briefly in a warm oven (250°F / 120°C) for 3 to 5 minutes to refresh the toasted marshmallow before serving.
To accommodate dietary needs, you can swap a few ingredients with predictable effects. For dairy-free, use a vegan cream cheese and dairy-free butter substitute; expect a slightly different mouthfeel and a less tangy finish. For gluten-free, choose a certified gluten-free yellow cake mix — textures remain similar but may be a touch crumblier. Use a commercial peanut butter alternative such as almond butter if peanuts are a concern, though flavor shifts will be noticeable. Egg replacers (like a flax or chia egg) can work but may change tenderness; test with a single batch first.
Serve warm or at room temperature alongside cold milk, a scoop of vanilla ice cream, or a simple fruit platter to balance the sweetness. For gatherings, arrange on a tiered platter with parchment doilies and small spoons for melted candy drips. Garnish with a light sprinkle of flaky sea salt on the candy before it fully sets to add contrast, or halve cookies for bite-size tasting portions at parties. These also pair nicely with coffee for an indulgent afternoon treat.
The Fluffernutter concept hails from American sandwich traditions that pair peanut butter and marshmallow creme, a nostalgic combination popular in mid-20th-century home kitchens. Translating that pairing into a cookie keeps the comforting flavors while introducing textural play: toasted marshmallow originated as a campfire favorite and later moved into ovens and broilers for quick caramelization. The candy bar topper modernizes the classic pairing, reflecting contemporary preferences for mashups that combine nostalgia with convenient, single-serve confections.
In cooler months, add a teaspoon of vanilla or maple extract to the dough for a cozy aroma, and consider swapping the candy toppers for seasonal spiced chocolates. For summer gatherings, serve chilled cookies with a dollop of whipped cream or a scoop of cold ice cream to contrast the toasted marshmallow. Holiday twists include stirring a teaspoon of pumpkin pie spice into the dough in autumn or using red-and-green mini candy bars for a festive presentation in winter.
Make the dough up to 24 hours in advance and store it covered in the refrigerator; this actually improves handling and flavor. Portion dough into balls and freeze on a tray, then move to a sealed bag — bake directly from frozen, adding 1 to 2 minutes to bake time. If preparing cookies for school lunches, assemble marshmallows and candy just before serving or transport candies separately to avoid melting. For batch gifting, layer cookies with parchment in a shallow box to preserve the topped surface.
These cookies are both comfort and conversation in one bite. Whether you make them for a crowd or a quiet afternoon, they invite smiles and a little nostalgia with every toasted, chocolatey mouthful. Try them once and you’ll find new ways to adapt them for every season and every crowd.
Chill the dough for at least 1 hour to prevent excessive spreading and to make scooping easier.
Watch closely while broiling marshmallows; they can go from toasted to burned in seconds.
If dough is sticky after chilling, lightly flour your hands or scoop with a cookie scoop dipped in cold water.
Flash-freeze cookies individually before bagging to prevent sticking and preserve the toasted marshmallow shape.
This nourishing peanut butter fluffernutter cookies recipe is sure to be a staple in your kitchen. Enjoy every moist, high protein slice — it is perfect for breakfast or as a wholesome snack any time.
This Peanut Butter Fluffernutter Cookies recipe makes perfectly juicy, tender, and flavorful steak every time! Serve with potatoes and a side salad for an unforgettable dinner in under 30 minutes.

In a large bowl, beat the yellow cake mix, softened butter, egg, softened cream cheese, and creamy peanut butter until a sticky, uniform dough forms. Use a stand mixer or hand mixer on medium speed, scraping down the bowl as needed to incorporate evenly.
Cover the bowl and refrigerate the dough for at least 1 hour. Chilling firms the dough and helps prevent excess spreading during baking.
Preheat the oven to 350°F. Scoop 36 equal dough portions using a tablespoon or small cookie scoop, roll into smooth balls, and place on parchment-lined baking sheets with spacing for slight rise.
Bake cookies for 8 to 9 minutes until edges set and centers are slightly soft. Remove pan, switch oven to broil, press a marshmallow half onto each cookie, and broil 1 to 2 minutes until marshmallows brown; watch closely to avoid burning.
After removing from the oven, let cookies sit 2 minutes, then transfer to parchment. Immediately press a peanut butter chocolate candy bar on top of each warm marshmallow so it adheres and slightly melts. Cool completely before storing.
Store cooled cookies in a loosely sealed container at room temperature for 2 to 3 days, or flash-freeze individually and store in airtight bags for up to 3 months.
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This recipe looks amazing! Can't wait to try it.
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