Chocolate Marshmallow Cookies – Rich, Fudgy, and Filled with Gooey Marshmallows

Why You’ll Love Chocolate Marshmallow Cookies Recipe

There are plenty of reasons these Chocolate Marshmallow Cookies deserve a place in your baking collection.

• Rich chocolate flavor: Dutch-processed cocoa powder gives these cookies a deep, smooth chocolate taste that pairs beautifully with the sweet marshmallow filling.

• Gooey marshmallow centers: Mini marshmallows melt inside the cookies during baking, creating a soft, sweet center that makes every bite irresistible.

• Soft and chewy texture: Melted butter and brown sugar help produce tender cookies with chewy edges and fudgy middles.

• Easy-to-find ingredients: Everything you need is likely already in your pantry or available at your local grocery store.

• Quick preparation: The dough comes together without complicated techniques or special equipment.

• Perfect for sharing: This recipe makes approximately 19 cookies, making it ideal for parties, bake sales, and homemade gifts.

• Customizable: Add chocolate chips, nuts, or different flavored marshmallows to create your own delicious variations.

• No electric mixer required: A simple whisk and spatula are all you need to prepare the cookie dough.

Whether you’re an experienced baker or making cookies for the first time, this recipe is a delicious way to enjoy the classic combination of chocolate and marshmallows.

Ingredients

The ingredients for these Chocolate Marshmallow Cookies are simple, but each plays an important role in creating their rich flavor and chewy texture.

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

• Unsalted butter (113 g / ½ cup): Melted and slightly cooled butter gives the cookies a rich flavor and contributes to their soft, chewy texture.

• All-purpose flour (165 g / 1¼ cups): Provides structure and helps the cookies hold their shape while baking.

• Dutch-processed cocoa powder (55 g / ½ cup): Creates a deep chocolate flavor and gives the cookies their dark, rich appearance.

• Baking soda (¾ teaspoon): Helps the cookies rise slightly and develop a tender texture.

• Salt (½ teaspoon): Balances the sweetness and enhances the chocolate flavor.

• Light brown sugar (135 g / ⅔ cup): Adds moisture, a subtle caramel flavor, and a deliciously chewy texture.

• Granulated sugar (50 g / ¼ cup): Adds sweetness and helps create lightly crisp cookie edges.

• Large egg (1, room temperature): Binds the ingredients together and adds richness.

• Vanilla extract (1 teaspoon): Enhances the chocolate flavor and adds a warm, sweet aroma.

• Mini marshmallows (¾ cup): Create the signature gooey centers that make these cookies special.

• Demerara or turbinado sugar (1 teaspoon, optional): Adds a delicate crunch and a slightly caramelized finish.

For the best results, use Dutch-processed cocoa powder rather than natural cocoa powder, as the two have different acidity levels and may behave differently with the baking soda.

Directions

Follow these simple steps to make delicious homemade Chocolate Marshmallow Cookies with soft centers and perfectly chewy edges.

Step 1: Melt the Butter

Melt the unsalted butter in a microwave-safe bowl or small saucepan.

Once melted, set it aside to cool slightly. The butter should remain liquid but should not be hot when combined with the other ingredients.

Using butter that is too hot can affect the consistency of the dough.

Step 2: Preheat the Oven

Preheat your oven to 350°F (180°C), or 320°F (160°C) for a fan-forced oven.

Line two large baking trays with parchment paper to prevent sticking and make cleanup easier.

Step 3: Combine the Dry Ingredients

In a medium mixing bowl, whisk together the all-purpose flour, Dutch-processed cocoa powder, baking soda, and salt.

Mix until the cocoa powder is evenly distributed and there are no large lumps.

Set the dry ingredients aside while preparing the wet mixture.

Step 4: Mix the Butter and Sugars

In a large mixing bowl, combine the slightly cooled melted butter, light brown sugar, and granulated sugar.

Using a balloon whisk, mix thoroughly until the ingredients are well combined.

The mixture should look smooth and slightly thick.

Step 5: Add the Egg and Vanilla

Add the room-temperature egg and vanilla extract to the butter and sugar mixture.

Whisk until the mixture becomes smooth, glossy, and fully combined.

Make sure the egg is completely incorporated before proceeding.

Step 6: Incorporate the Dry Ingredients

Add the flour and cocoa mixture to the wet ingredients.

Using a spatula, gently fold everything together until no dry flour remains.

Avoid overmixing, as this can make the cookies tougher rather than soft and tender.

The finished dough should be thick, chocolatey, and slightly sticky.

Step 7: Rest the Cookie Dough

Allow the dough to rest at room temperature for approximately 10 minutes.

This step is important because it gives the flour time to absorb moisture, making the dough easier to handle.

Resting also helps the cookies maintain their shape during baking.

Step 8: Fill the Cookies with Marshmallows

Scoop approximately 2 tablespoons of cookie dough and roll it into a ball.

Use your thumb or fingers to make a small indentation in the center.

Place approximately 6 mini marshmallows inside the indentation.

Carefully bring the edges of the dough over the marshmallows and pinch them together until the filling is completely enclosed.

Make sure no marshmallows are exposed, as they may melt and leak out during baking.

Step 9: Shape and Arrange

Gently roll the filled dough between your palms to create a smooth, round ball.

Place the cookie balls on the prepared baking trays, leaving approximately 2 inches of space between them.

This allows the cookies to spread without touching each other.

Step 10: Add the Optional Sugar Topping

If desired, sprinkle a small amount of demerara or turbinado sugar over the top of each cookie.

This creates a delicate, crunchy finish that contrasts beautifully with the soft chocolate centers.

Step 11: Bake the Cookies

Place the baking trays in the preheated oven and bake for 9–10 minutes.

The cookies should appear set around the edges but remain slightly soft in the centers.

Avoid overbaking, as the cookies will continue to firm up as they cool.

Step 12: Shape the Cookies While Warm

Immediately after removing the cookies from the oven, you can use a round cookie cutter slightly larger than each cookie to improve their shape.

Place the cutter around a warm cookie and gently move it in a circular motion.

This helps create evenly rounded cookies with slightly thicker edges.

This step is optional but especially useful when you want bakery-style results.

Step 13: Cool and Serve

Allow the cookies to cool on the baking trays for 10–15 minutes.

They will be delicate immediately after baking, so moving them too early may cause them to break.

Once they are firm enough to handle, transfer them to a wire rack to cool completely.

Enjoy them slightly warm for a softer marshmallow center or at room temperature for a firmer, chewy texture.

Servings and timing

These Chocolate Marshmallow Cookies are quick enough for everyday baking while still feeling like a special homemade dessert.

The total time may increase if the cookies need to be baked in multiple batches.

Variations

One of the best things about Chocolate Marshmallow Cookies is how easily you can customize them. Here are several delicious variations to try.

1. Double Chocolate Marshmallow Cookies

Add ½ cup of semisweet or dark chocolate chips to the cookie dough before shaping.

The extra chocolate creates pockets of melted chocolate throughout the cookies, making them even richer and more indulgent.

2. S’mores Chocolate Cookies

Add a small amount of crushed graham crackers to the marshmallow filling.

You can also sprinkle additional graham cracker crumbs over the cookies before baking.

This variation brings the familiar flavors of campfire s’mores into a soft chocolate cookie.

3. Peanut Butter Marshmallow Cookies

Place a small amount of thick peanut butter in the center of each cookie along with the marshmallows.

Be careful not to overfill the dough, as too much filling may cause the cookies to split.

The combination of peanut butter, chocolate, and marshmallows is especially delicious.

4. Mint Chocolate Marshmallow Cookies

Add a small amount of peppermint extract to the dough along with the vanilla.

Start with ⅛ teaspoon and adjust carefully, since peppermint extract can be quite strong.

This variation is perfect for winter holidays and festive cookie platters.

5. White Chocolate Marshmallow Cookies

Fold ½ cup of white chocolate chips into the dough.

The creamy sweetness of white chocolate complements the rich cocoa and soft marshmallow centers.

6. Chocolate Marshmallow Cookies with Nuts

Add ⅓ cup of finely chopped walnuts or pecans to the cookie dough.

The nuts provide a satisfying crunch that contrasts with the chewy cookie texture.

7. Salted Chocolate Marshmallow Cookies

Sprinkle a small pinch of flaky sea salt over the cookies immediately after baking.

The salt balances the sweetness and enhances the rich chocolate flavor.

8. Espresso Chocolate Marshmallow Cookies

Mix ½ teaspoon of instant espresso powder into the dry ingredients.

The coffee flavor intensifies the chocolate without necessarily making the cookies taste strongly of coffee.

Storage/Reheating

Proper storage helps preserve the chewy texture and rich chocolate flavor of these cookies.

Storing at Room Temperature

Allow the cookies to cool completely before placing them in an airtight container.

Store at room temperature for up to 3–4 days.

Place parchment paper between layers to prevent the cookies from sticking together.

Keep the container in a cool, dry location away from direct sunlight.

Storing in the Refrigerator

You can refrigerate the cookies in an airtight container for up to 1 week.

However, refrigeration may make the cookies firmer and slightly change the texture of the marshmallow filling.

For the best flavor, allow refrigerated cookies to return to room temperature before serving.

Freezing Baked Cookies

These cookies can be frozen for up to 2 months.

Once completely cooled, arrange them in a single layer on a baking sheet and freeze until firm.

Transfer the frozen cookies to a freezer-safe container or resealable bag, separating layers with parchment paper.

Thaw at room temperature before serving.

Freezing Cookie Dough

You can also freeze the unbaked, marshmallow-filled cookie dough balls.

Place them on a lined baking tray and freeze until solid, then transfer them to a freezer-safe bag.

Store for up to 2 months.

When ready to bake, place the frozen dough balls on a prepared baking tray and bake directly from frozen, adding approximately 1–3 minutes to the baking time as needed.

Reheating in the Microwave

To enjoy a warm, soft cookie, place one cookie on a microwave-safe plate.

Heat for approximately 5–10 seconds, checking the texture before heating further.

Be careful, as marshmallow fillings can become very hot.

Reheating in the Oven

Preheat the oven to 300°F (150°C).

Place the cookies on a parchment-lined baking tray and warm for approximately 3–5 minutes.

Allow them to cool briefly before eating.

This method helps refresh the texture while warming the marshmallow centers.

FAQs

1. Why did my chocolate marshmallow cookies spread too much?

Cookies may spread excessively if the melted butter is too hot, the dough is too warm, or the flour has been measured incorrectly.

Allowing the dough to rest for 10 minutes helps improve its consistency.

If the dough still feels overly soft, refrigerate it for 15–20 minutes before shaping.

Also, make sure your baking trays are cool before placing additional cookie dough on them.

2. Can I use regular cocoa powder instead of Dutch-processed cocoa powder?

Dutch-processed cocoa powder is recommended because it produces a smooth, rich chocolate flavor and works with the recipe’s intended balance of ingredients.

Natural cocoa powder has a different acidity level, which can affect how it reacts with baking soda.

Although you can experiment with natural cocoa powder, the flavor, texture, and spread may be different.

For consistent results, stick with Dutch-processed cocoa powder.

3. How do I keep the marshmallows from leaking out of the cookies?

The most important step is to completely enclose the marshmallows inside the cookie dough.

After adding the marshmallows, carefully pinch the dough edges together and roll the ball until the surface is smooth.

Check for cracks or exposed marshmallows before placing the cookies on the baking tray.

Avoid overfilling the cookies, since too many marshmallows can cause the dough to split during baking.

4. Can I use large marshmallows instead of mini marshmallows?

Yes, but mini marshmallows are easier to distribute evenly inside the cookie dough.

If using large marshmallows, cut them into smaller pieces before filling the cookies.

Try to keep the amount of marshmallow filling similar to the original recipe.

Smaller pieces are easier to enclose and reduce the chance of marshmallow leakage.

5. Why are my chocolate marshmallow cookies dry or hard?

Dry cookies are usually caused by overbaking or adding too much flour.

Measure the flour accurately, preferably using a kitchen scale.

Bake the cookies only until the edges are set and the centers still appear slightly soft.

Remember that they will continue to firm up while cooling on the baking tray.

6. Do I need to chill the cookie dough before baking?

No, this recipe does not require chilling.

A 10-minute rest at room temperature is generally enough to make the dough easier to shape.

However, if your kitchen is particularly warm or the dough feels sticky, chilling it briefly can help.

Avoid chilling the dough until it becomes extremely firm, as this can make it difficult to wrap around the marshmallows.

7. Can I make chocolate marshmallow cookies ahead of time?

Yes. You can prepare the cookie dough in advance and refrigerate it in an airtight container for up to 24 hours.

For convenience, shape and fill the cookie dough balls before refrigerating them.

When ready to bake, allow the dough to soften slightly if necessary, then bake as directed.

You may need to adjust the baking time slightly if the dough is very cold.

8. How do I know when chocolate marshmallow cookies are done baking?

Chocolate cookies can be tricky because their dark color makes browning difficult to see.

Look for edges that appear set while the centers remain slightly soft.

The cookies should no longer look wet on the surface, but they should not feel completely firm.

After 9–10 minutes in the oven, remove them and allow them to finish setting on the hot baking tray.

9. Can I add chocolate chips to these cookies?

Absolutely. Chocolate chips are a delicious addition that makes the cookies even more chocolatey.

Fold approximately ½ cup of semisweet, milk, or dark chocolate chips into the dough after combining the wet and dry ingredients.

You can also press a few extra chocolate chips onto the tops of the dough balls before baking.

Keep the marshmallow filling enclosed in the center for the best results.

10. Why are my marshmallow centers no longer gooey after the cookies cool?

Marshmallows naturally become firmer as they cool, so the filling may lose some of its gooey texture at room temperature.

This is completely normal and does not mean the cookies were baked incorrectly.

To restore a softer center, warm a cookie in the microwave for a few seconds before serving.

The marshmallow filling will soften again, creating a texture similar to freshly baked cookies.

Conclusion

Chocolate Marshmallow Cookies are a delicious combination of rich cocoa flavor, chewy chocolate cookie dough, and sweet marshmallow centers. With their slightly crisp edges and soft, fudgy interiors, they offer everything you could want in a homemade chocolate treat.

What makes this recipe especially appealing is its simplicity. You don’t need complicated ingredients, special baking equipment, or hours of preparation to create cookies that look and taste impressive. A few pantry staples, a handful of mini marshmallows, and some simple baking techniques are all it takes.

These cookies are perfect for sharing with friends and family, adding to holiday dessert trays, packing into lunchboxes, or enjoying with a cold glass of milk or a warm cup of coffee.

Whether you follow the original recipe or experiment with chocolate chips, peanut butter, nuts, or peppermint, these Chocolate Marshmallow Cookies are sure to become a favorite whenever you’re craving something sweet, chocolatey, and comforting.