Chocolate Marshmallow Swirl Cookies

Section: Sweet Endings

Experience the decadent fusion of chocolate and marshmallow in every bite of these irresistible swirl cookies. Rich cocoa pairs beautifully with fluffy marshmallow, creating a treat that’s both fudgy and chewy with a signature gooey center. The dough is chilled for ultimate texture, then scooped and swirled for eye-catching appeal. Whether served fresh from the oven or stored for later, these cookies stay soft and flavorful. Ideal for dessert lovers, they work perfectly for bake sales, lunchboxes, or cozy evenings with a glass of milk.

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Created By Emma
Updated last on Sun, 23 Nov 2025 19:47:24 GMT
A plate of chocolate chip cookies with white icing. Save
A plate of chocolate chip cookies with white icing. | sweetbyemma.com

Chocolate marshmallow swirl cookies combine rich cocoa and cloudlike marshmallow in every bite for the ultimate crowd pleasing bake. The signature marble pattern always wows guests at bake sales and birthday parties and these cookies have become my rainy day go to whenever my family craves something truly special with minimal fuss.

I first made these cookies on a snowy afternoon with my kids. They loved swirling the marshmallow and sneaking little tastes from the bowl—we hardly waited for them to cool.

Ingredients

  • All-purpose flour: gives structure and just the right chew always look for unbleached for best flavor
  • Unsweetened cocoa powder: deep chocolate note use Dutch process for even richer color and taste
  • Baking soda: for gentle lift so the cookies are soft in the middle
  • Salt: balances the sweetness use fine sea salt for even seasoning
  • Unsalted butter: for richness and tenderness use high-quality European-style if possible
  • Granulated sugar: for sweetness and crisp edges try organic cane sugar for a touch of caramel flavor
  • Large eggs: for binding and moisture always use room temperature for best mixing
  • Pure vanilla extract: rounds out the chocolate and adds warmth use pure vanilla for the best aroma
  • Marshmallow fluff: creates gooey swirls throughout the cookies look for a brand with minimal additives

Instructions

Prepare the Dry Ingredients:
In a medium mixing bowl whisk together the flour cocoa powder baking soda and salt until completely uniform so your dough bakes evenly every time
Cream the Butter and Sugar:
In a large bowl beat the unsalted butter and granulated sugar with an electric mixer for about four minutes scraping down the sides frequently the mixture should be very pale and fluffy at the end which guarantees a tender cookie
Mix in Eggs and Vanilla:
Add one egg at a time beating each until fully incorporated before adding the next to avoid curdling finally mix in the vanilla extract for that round bakery-style aroma
Combine Wet and Dry Mixtures:
With the mixer on low speed add the dry ingredients in two or three additions mixing until just combined do not beat too long or the cookies will be tough stop as soon as no dry streaks remain
Swirl the Marshmallow:
Decide when to add the marshmallow fluff either swirl gently into the finished dough right now for a marbled look or wait to add it when shaping the cookies for more dramatic swirls
Chill the Dough:
Press plastic wrap directly against the surface and refrigerate the dough for at least one hour chilling helps the flavors meld and keeps the cookies from spreading too much
Preheat and Prep the Oven:
While the dough chills heat your oven to three hundred fifty degrees and line two baking sheets with parchment or silicone mats to ensure easy release and even baking
Shape the Cookies and Swirl In More Marshmallow:
Scoop balls of dough and arrange them a few inches apart on the sheets make a small indentation in each center drop in about a teaspoon of marshmallow fluff and use a clean toothpick to swirl it gently through the top for a classic marbled finish
Bake the Cookies:
Bake for about ten to twelve minutes until the edges are set but the centers are soft do not overbake for maximum chewiness rotate pans halfway if baking more than one at a time for even doneness
Cool and Finish:
Let cookies rest on the baking sheet for five minutes then use a thin spatula to transfer them to a rack so the marshmallow sets slightly and the cookies remain easy to handle
A plate of chocolate and white cookies.
A plate of chocolate and white cookies. | sweetbyemma.com

My personal favorite is the way that golden baked marshmallow on top turns just slightly crisp while the center stays perfectly gooey. These cookies are always the first to disappear when I make a batch for my nieces birthdays and seeing their sticky smiles is truly the best part of baking them.

Storage Tips

Once cooled store these cookies in an airtight tin at room temperature and they will stay soft and chewy for about four days. If you want to keep them longer stack them between pieces of parchment and freeze for up to three months. To refresh simply microwave for ten seconds to restore that gooey marshmallow magic.

Ingredient Substitutions

If marshmallow fluff is not available use mini marshmallows pressed into each cookie center. Olive oil based plant butter can stand in for dairy if needed. For a gluten free option use a measure for measure gluten free flour blend and double check the cocoa is gluten free too.

Serving Suggestions

Serve these with a big mug of hot chocolate for the ultimate double chocolate comfort moment. Arrange them on a pretty platter dusted with extra cocoa for impressive presentation at any special event. They also make playful ice cream sandwich cookies with a scoop of vanilla or chocolate ice cream pressed between two cookies.

Cultural and Historical Note

Marble style chocolate cookies have roots in American bake sales and family gatherings. Marshmallows in cookies became trendy with the rise of rocky road desserts in the early twentieth century when American bakers started folding marshmallow into chocolate rich treats. The swirl pattern pays homage to classic campfire s’mores while feeling indulged enough for modern dessert lovers.

Seasonal Adaptations

Add crushed peppermint candy for a festive winter version. Chopped walnuts folded into the dough add crunch and an autumn vibe. Try swirling in a touch of strawberry jam with marshmallow for a spring berry twist.

Success Stories

Friends have brought these to cookie swaps and always report jealous requests for the recipe. One year I shaped some into hearts for Valentine’s Day and they were a hit with my kids’ classmates. These cookies have a way of making simple moments feel extra special.

Freezer Meal Conversion

To freeze for busy days scoop and shape the dough as directed then freeze on a tray until solid. Once frozen transfer to a storage bag. Bake directly from the freezer by adding two minutes to the original bake time for fresh cookies whenever a chocolate craving strikes.

A plate of chocolate and white frosted cookies.
A plate of chocolate and white frosted cookies. | sweetbyemma.com

These cookies are as fun to make as they are to eat. With their dramatic swirls and deep chocolate flavor they will become a signature treat for any baker.

FAQs for This Recipe

→ How do I achieve the perfect marshmallow swirl?

Drop a teaspoon of marshmallow fluff into an indent on each dough ball and gently swirl with a toothpick for that iconic pattern.

→ Can I use real marshmallows instead of fluff?

Yes, melted marshmallows create a thicker swirl and a fluffier texture compared to marshmallow fluff.

→ Why chill the dough before baking?

Chilling firms up the dough, reducing spreading during baking and ensuring soft, chewy cookies with crisp edges.

→ How should I store the finished cookies?

Keep them in an airtight container at room temperature to preserve their soft texture and fresh flavor.

→ Is it possible to freeze the dough?

Absolutely. Shape the dough into balls and freeze. When ready to bake, add a few extra minutes to the baking time.

Chocolate Marshmallow Swirl Cookies

Gooey marshmallow swirled into soft, chocolate cookies. A delightful treat for any sweet craving or special occasion.

Preparation Time
20 minutes
Time to Cook
30 minutes
Overall Time
50 minutes
Created By: Emma

Recipe Type: Desserts

Difficulty Level: Simple for Beginners

Type of Cuisine: American

Portion Count: 24 Serving Size (24 cookies)

Dietary Choices: Vegetarian-Friendly

Ingredients You’ll Need

→ Dough

01 250 g all-purpose flour
02 65 g unsweetened cocoa powder
03 0.5 teaspoon baking soda
04 0.25 teaspoon fine salt
05 227 g unsalted butter, room temperature
06 300 g granulated sugar
07 2 large eggs, room temperature
08 2 teaspoons vanilla extract

→ Filling

09 1 cup (about 225 g) marshmallow fluff

How to Make It

Step 01

In a medium bowl, whisk together all-purpose flour, unsweetened cocoa powder, baking soda, and salt until fully blended.

Step 02

In a large mixing bowl, use an electric mixer to beat unsalted butter with granulated sugar until pale and fluffy, approximately 3 minutes.

Step 03

Add eggs one at a time to the butter mixture, mixing well after each addition. Stir in the vanilla extract.

Step 04

Gradually mix the dry ingredients into the wet mixture on low speed just until a soft dough forms. Avoid overmixing. Swirl in the marshmallow fluff lightly, or reserve for filling after chilling.

Step 05

Cover the dough and refrigerate for at least 1 hour to firm up and prevent excessive spreading during baking.

Step 06

Preheat the oven to 175°C. Line two baking sheets with parchment paper or silicone baking mats.

Step 07

Scoop portions of chilled dough with a cookie scoop or tablespoon and roll into balls. Place spaced apart on prepared baking sheets. Press an indent in the center of each, fill with a teaspoon of marshmallow fluff, and gently swirl the filling with a toothpick.

Step 08

Bake for 10–12 minutes until the edges are set but centers remain soft. Optionally, add extra marshmallow fluff to the tops halfway through baking for a gooier texture.

Step 09

Allow to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely before serving.

Extra Tips

  1. If dough feels sticky, chill for an additional 30 minutes for easier handling.
  2. For a fluffier swirl, consider using melted marshmallows in place of marshmallow fluff.
  3. Insert a jumbo marshmallow in the center for extra height and texture.
  4. Rotate baking sheets halfway through for even cooking.
  5. Store cooled cookies in an airtight container at room temperature for optimal freshness.
  6. Freeze shaped dough balls and bake from frozen, allowing a few extra minutes of baking time.

What You’ll Need

  • Electric mixer
  • Mixing bowls
  • Cookie scoop or tablespoon
  • Parchment paper or silicone baking mat
  • Wire cooling rack
  • Toothpick

Allergen Information

Double-check ingredients for allergens and consult a professional if needed.
  • Contains wheat (gluten)
  • Contains egg
  • Contains dairy

Nutritional Information (Per Serving)

This info is for reference only and shouldn’t replace professional health advice.
  • Calories: 184
  • Fats: 8 grams
  • Carbs: 25 grams
  • Proteins: 2 grams