Chocolate Marshmallow Swirl Cookies
I remember the first chilly evening I pulled a tray of Chocolate Marshmallow Swirl Cookies from the oven—the scent of cocoa and toasted marshmallow filling the kitchen while leaves whispered outside. One bite melted into gooey marshmallow ribbons and tender chocolate cookie, and that cozy moment became a seasonal ritual I make every fall.
Why this recipe is a reader favorite
These Chocolate Marshmallow Swirl Cookies are a perfect blend of nostalgic s’mores and classic chocolate cookies. They’re soft in the middle, slightly crisp at the edges, and studded with molten marshmallow swirls that everyone—kids and adults—loves. If you enjoy easy, comforting baking projects, this recipe delivers crowd-pleasing results with minimal fuss. If you’re exploring other cozy treats, you might enjoy the best air fryer peanut butter chocolate chip cookies for another indulgent option.
Ingredients
- 1 cup (2 sticks) unsalted butter, softened
- 1 cup granulated sugar
- 1/2 cup brown sugar, packed
- 2 large eggs
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour
- 2/3 cup unsweetened cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup semi-sweet chocolate chips
- 1 cup mini marshmallows
- Optional: 1/2 cup chopped toasted nuts or toffee bits
If you’d like to try a different texture or baking method while making these cookies, check the helpful guide for air fryer biscuits and cookies for ideas on heat and time adjustments.
Step-by-step instructions
- Preheat and prepare: Preheat the oven to 350°F (175°C). Line two baking sheets with parchment paper or silicone mats.
- Cream butter and sugars: In a large bowl, beat the softened butter with granulated and brown sugar until light and fluffy, about 2–3 minutes.
- Add eggs and vanilla: Beat in the eggs one at a time, then mix in the vanilla until combined.
- Combine dry ingredients: In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt.
- Mix dough: Gradually add the dry ingredients to the wet mixture, mixing until just combined. Fold in the chocolate chips.
- Form cookies: Scoop about 2 tablespoons of dough, flatten slightly on your palm, place a few mini marshmallows in the center, then fold dough around them and roll into a ball so the marshmallows are enclosed. Place on the prepared baking sheet about 2 inches apart.
- Bake: Bake for 10–12 minutes, or until edges are set but centers remain soft. The marshmallow will melt and create the signature swirl as the cookie cools.
- Cool: Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to finish cooling. This helps the marshmallow swirl set without spreading too thin.
For alternative approaches to chewy cookies or baking in small appliances, see this recipe for air fryer peanut butter cookies which showcases different cook times and textures.
Tips for success
- Use room-temperature butter and eggs to create a smoother dough that bakes evenly.
- Don’t overmix: combine until the dry ingredients are just incorporated to keep cookies tender.
- Enclose the marshmallow: wrapping dough fully around the marshmallow prevents it from oozing out too much during baking.
- Toast marshmallows lightly if you want deeper caramelization—do this very briefly with a kitchen torch or under a broiler for 10–15 seconds before enclosing them.
- If baking in an air fryer, reduce time and check early; you can adapt these cookies using the method in this air fryer banana peanut butter chocolate dessert guide for timing cues.
Possible variations
- Gluten-free: Substitute a 1:1 gluten-free flour blend for the all-purpose flour and add 1/4 teaspoon xanthan gum if your blend doesn’t include it.
- Streusel topping: For a crunchy twist, press a small sprinkle of cinnamon-sugar streusel onto the top of each dough ball before baking.
- Double chocolate: Use dark cocoa and increase chocolate chips to 1 1/2 cups for extra richness.
- Nutty or toffee mix-ins: Fold in 1/2 cup chopped pecans or toffee bits for texture and seasonal flavor.
- S’mores style: Add a square of graham cracker inside with the marshmallow for an authentic s’mores swirl—this pairs naturally with chocolate brownies, which you can explore for other desserts here: chocolate brownies.
Storage recommendations
- Room temperature: Store cooled cookies in an airtight container for up to 3 days. Place a sheet of parchment between layers to prevent sticking.
- Refrigerate: For longer life (up to 1 week), refrigerate in an airtight container.
- Freeze: Freeze baked cookies in a single layer on a baking sheet, then transfer to a freezer-safe bag for up to 3 months. Thaw at room temperature or warm gently in a low oven for a freshly-baked feel. Cookie dough balls can also be frozen and baked straight from frozen—add 1–2 minutes to baking time.
Conclusion
These Chocolate Marshmallow Swirl Cookies make any autumn afternoon feel like a warm hug—perfect for holiday cookie swaps, cozy evenings by the fire, or a fun bake with family. For another take on chocolate-meets-marshmallow treats, you can find inspiration at Chocolate Marshmallow Cookies – Broma Bakery.
FAQs
Q: Can I use regular marshmallows instead of mini marshmallows?
A: Yes. If you use regular marshmallows, tear them into smaller pieces so they’re easier to enclose in the dough and bake evenly.
Q: Why did my marshmallow leak out of the cookie?
A: If the marshmallow leaks, it may not have been fully enclosed or the dough was too thin around it. Make slightly larger dough pockets and seal the edges well.
Q: Can I chill the dough before baking?
A: Absolutely. Chilling the dough for 30 minutes to an hour will firm it up and help control spreading, resulting in thicker cookies.
Q: Are these suitable for kids to help make?
A: Yes—this is a great kid-friendly recipe. Let children shape dough and stuff marshmallows under supervision, and handle oven tasks yourself for safety.

Chocolate Marshmallow Swirl Cookies
- Total Time: 27 minutes
- Yield: 24 cookies
- Diet: Vegetarian
Description
These Chocolate Marshmallow Swirl Cookies combine the nostalgia of s’mores with classic chocolate cookies, featuring gooey marshmallow swirls.
Ingredients
- 1 cup (2 sticks) unsalted butter, softened
- 1 cup granulated sugar
- 1/2 cup brown sugar, packed
- 2 large eggs
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour
- 2/3 cup unsweetened cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup semi-sweet chocolate chips
- 1 cup mini marshmallows
- Optional: 1/2 cup chopped toasted nuts or toffee bits
Instructions
- Preheat the oven to 350°F (175°C). Line two baking sheets with parchment paper or silicone mats.
- Cream the softened butter with granulated and brown sugar until light and fluffy, about 2–3 minutes.
- Add the eggs one at a time, then mix in the vanilla until combined.
- Combine the flour, cocoa powder, baking soda, and salt in a separate bowl.
- Mix the dry ingredients into the wet mixture until just combined. Fold in the chocolate chips.
- Form cookies by scooping about 2 tablespoons of dough, flattening slightly, placing a few mini marshmallows in the center, wrapping the dough around them, and rolling into a ball.
- Bake for 10–12 minutes, or until edges are set but centers remain soft.
- Cool on the baking sheet for 5 minutes before transferring to a wire rack to finish cooling.
Notes
For variations, substitute gluten-free flour, add streusel topping, or include graham crackers for a s’mores twist.
- Prep Time: 15 minutes
- Cook Time: 12 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
