Imagine biting into a warm, chewy cookie that delivers a double hit of chocolate, followed by a melt‑in‑your‑mouth puff of toasted marshmallow. That’s the magic of these Double Chocolate Marshmallow Cookies—perfect for a lazy weekend brunch or a special breakfast treat.
What sets this recipe apart is the harmonious blend of two types of chocolate: rich cocoa powder in the dough and silky chocolate chips that melt into every bite. The addition of mini marshmallows creates pockets of gooey sweetness that contrast beautifully with the crisp edges.
Chocolate lovers, brunch enthusiasts, and even kids who adore fluffy marshmallows will adore these cookies. Serve them alongside fresh fruit, a glass of cold milk, or a frothy cappuccino for an indulgent start to the day.
The process is straightforward: whisk dry ingredients, fold in wet components, stir in chocolate chips and marshmallows, then bake until the tops are lightly browned and the centers stay soft. In just 35 minutes you’ll have a batch of crowd‑pleasing cookies.
Why You'll Love This Recipe
Double Chocolate Delight: The combination of cocoa‑infused dough and melty chocolate chips gives every bite an intense, layered chocolate experience that feels luxurious yet comforting.
Marshmallow Magic: Mini marshmallows puff up during baking, creating sweet pockets that melt on the tongue and balance the richness of the chocolate.
Brunch‑Ready Speed: With a prep time of just 20 minutes and a short bake, these cookies fit perfectly into a relaxed morning schedule without sacrificing flavor.
Customizable Canvas: Swap in white chocolate, add a pinch of sea salt, or drizzle with caramel for endless variations that keep the recipe fresh and exciting.
Ingredients
For these cookies, the foundation is a classic chocolate cookie dough enriched with melted butter and brown sugar. The cocoa powder gives a deep, earthy tone, while the chocolate chips add bursts of melty sweetness. Mini marshmallows bring a light, airy contrast, and a touch of vanilla rounds out the flavor profile. The final dusting of sea salt amplifies the chocolate’s complexity and balances the marshmallow’s sweetness.
Dry Ingredients
- 1 ½ cups all‑purpose flour
- ¼ cup unsweetened cocoa powder
- ½ teaspoon baking soda
- ¼ teaspoon fine sea salt
Wet Ingredients
- ½ cup unsalted butter, melted and cooled
- ¾ cup dark brown sugar, packed
- 1 large egg, room temperature
- 1 teaspoon pure vanilla extract
Chocolate & Marshmallows
- 1 cup semisweet chocolate chips
- ½ cup mini marshmallows
The melted butter and brown sugar create a glossy, tender crumb, while the egg binds everything together and adds richness. Cocoa powder deepens the chocolate flavor without making the dough too dry. Chocolate chips melt into pockets of gooey bliss, and the marshmallows puff just enough to stay soft inside the cookie. A pinch of sea salt at the end lifts every nuance, turning an indulgent treat into a balanced masterpiece.
Step-by-Step Instructions

Preparing the Dry Mix
Begin by whisking together all‑purpose flour, cocoa powder, baking soda, and sea salt in a medium bowl. Whisking ensures the cocoa is evenly dispersed, preventing dark streaks in the final cookies. Set the bowl aside while you work on the wet side.
Combining Wet Ingredients
In a large mixing bowl, pour in the melted butter and stir in the dark brown sugar until the mixture looks glossy and the sugar begins to dissolve—about 2 minutes with a wooden spoon. Add the egg and vanilla extract, beating until fully incorporated. This creates a smooth, slightly thick batter that will hold the dry ingredients without over‑mixing.
Bringing It All Together
- Fold in the dry mix. Gradually add the whisked dry ingredients to the wet batter, stirring with a spatula just until no flour streaks remain. Over‑mixing can develop gluten, leading to a tough cookie, so stop as soon as the dough comes together.
- Incorporate chocolate and marshmallows. Gently fold in the semisweet chocolate chips and mini marshmallows. The marshmallows should stay whole; crushing them will cause them to melt into the dough rather than staying as pockets.
- Chill the dough. Cover the bowl with plastic wrap and refrigerate for 15 minutes. Chilling firms the butter, which helps the cookies keep their shape when baked and prevents excessive spreading.
- Preheat the oven. Set your oven to 350°F (175°C) and line a baking sheet with parchment paper. A hot, even oven ensures the edges set quickly while the center stays soft.
- Scoop and bake. Using a 2‑tablespoon cookie scoop, drop dough onto the prepared sheet, spacing them 2 inches apart. Bake for 12‑14 minutes, or until the tops are set and just beginning to crack. The edges should be lightly browned while the centers remain slightly soft—this is the cue for a perfect chewy texture.
Finishing Touches
Remove the cookies from the oven and let them rest on the baking sheet for 3 minutes; they will continue to set as they cool. Transfer to a wire rack to cool completely. If you love a salty finish, sprinkle a tiny pinch of flaky sea salt on each warm cookie before they fully cool. Serve with a glass of milk or a cup of coffee for a truly indulgent brunch.
Tips & Tricks
Perfecting the Recipe
Measure flour correctly. Spoon flour into the measuring cup and level it with a knife. Too much flour yields dense cookies; the right amount keeps them tender.
Use room‑temperature butter. Melted butter should cool to about 90°F before mixing; this prevents the egg from cooking prematurely.
Don’t over‑mix. Once the dry ingredients are added, stir just until combined. Over‑mixing develops gluten, resulting in a tougher cookie.
Chill before baking. A brief chill locks in shape and yields a higher rise, giving the cookies a soft interior and a slightly crisp edge.
Flavor Enhancements
Add a teaspoon of espresso powder to amplify the chocolate notes without tasting coffee. A drizzle of caramel sauce or a sprinkle of toasted coconut after baking introduces a complementary sweet‑nutty layer. For a touch of sophistication, fold in a pinch of smoked sea salt into the dough.
Common Mistakes to Avoid
Skipping the cooling step often leads to flat, overly crisp cookies because the butter melts too quickly. Also, avoid using marshmallows that are too large; they can burst and create uneven pockets of gooeyness. Finally, don’t open the oven door before the timer ends—temperature loss can cause uneven baking.
Pro Tips
Use high‑quality chocolate. A cocoa content of 60‑70% provides depth and a glossy melt, elevating the overall flavor.
Rotate the pan halfway. Even oven hot spots can cause one side to brown faster; a quick 180‑degree turn ensures uniform color.
Store with a slice of bread. Placing a fresh slice of bread in the container keeps cookies soft for up to a week.
Experiment with texture. For extra crunch, sprinkle a few chopped toasted almonds on top before baking.
Variations
Ingredient Swaps
Replace semisweet chips with white chocolate or milk chocolate for a sweeter profile. Swap mini marshmallows for chopped toasted marshmallow fluff for a chewier bite. For a nutty twist, fold in ¼ cup chopped hazelnuts or pecans along with the chips.
Dietary Adjustments
Use a gluten‑free flour blend in place of all‑purpose flour; ensure the blend contains xanthan gum for structure. Substitute butter with coconut oil for a dairy‑free version, and choose dairy‑free chocolate chips. For a low‑sugar option, replace brown sugar with a 1:1 coconut sugar or a sugar‑free blend, keeping the same volume.
Serving Suggestions
Pair the cookies with a fresh fruit platter—berries, sliced kiwi, and orange segments balance the richness. A dollop of Greek yogurt drizzled with honey makes a light accompaniment. For a truly brunch‑worthy spread, serve alongside mini quiches or a savory avocado toast.
Storage Info
Leftover Storage
Allow cookies to cool completely, then place them in an airtight container lined with a paper towel to absorb excess moisture. Store at room temperature for up to 4 days. For longer keeping, freeze in a single layer on a baking sheet, then transfer to a freezer‑safe bag; they’ll stay fresh for up to 3 months.
Reheating Instructions
To revive softness, warm cookies in a 300°F (150°C) oven for 5‑7 minutes, or microwave a single cookie for 10‑12 seconds on medium power. Adding a splash of milk or a few drops of water to the plate before microwaving helps retain moisture and prevents the marshmallows from drying out.
Frequently Asked Questions
This Double Chocolate Marshmallow Cookies recipe delivers a perfect balance of deep cocoa, melty chocolate, and fluffy marshmallow pockets—ideal for a brunch that feels both indulgent and comforting. We’ve covered every step from ingredient selection to storage, plus plenty of tips, variations, and answers to common questions. Feel free to experiment with flavors, textures, or dietary tweaks; the core technique remains forgiving and rewarding. Serve them warm, share them with loved ones, and enjoy every bite of this sweet, chocolate‑filled morning treat!