Gooey S'mores Stuffed Chocolate Chip Cookies

These Gooey S’mores Stuffed Chocolate Chip Cookies combine a rich, buttery dough with a molten center of toasted marshmallow, milk chocolate, and crunchy graham cracker for an unforgettable treat.

Ingredients

To ensure the best results, precise measurements and proper ingredient preparation are essential. The following list includes every component required to create this stuffed cookie, along with notes on why each item matters.

All-purpose flour (2 1/4 cups): Provides the structural base. Using standard all-purpose flour ensures the cookies hold their shape while remaining tender inside.
Unsalted butter, softened (1 cup): Softened means room temperature, not melted. This allows the butter to cream properly with the sugars, trapping air bubbles that help the cookies rise slightly and become chewy.
Brown sugar (3/4 cup): Adds moisture and a deep caramel-like flavor. The molasses in brown sugar contributes to the soft, gooey texture of the final cookie.
Granulated sugar (1/2 cup): Helps spread the cookies and adds a crisp edge. A mix of both sugars creates the ideal balance between a crispy exterior and a soft interior.
Eggs (2 large): Act as a binder and add richness. Large eggs provide consistent volume and fat content necessary for emulsifying the dough.
Vanilla extract (2 teaspoons): Enhances the overall sweetness and rounds out the chocolate flavors. Use pure vanilla extract for the best aroma.
Baking soda (1 teaspoon): A leavening agent that helps the cookies spread and brown. It reacts with the acidic components in the brown sugar to create lift.
Salt (1/2 teaspoon): Crucial for balancing sweetness and amplifying the chocolate flavor. Even though we use unsalted butter, salt is still needed in the dough.
Semi-sweet chocolate chips (1 1/2 cups): These are folded into the dough for classic chocolate pockets. They melt slightly during baking to create extra fudgy spots.
Marshmallows (12 large): The star of the stuffing. Large marshmallows provide the signature “s’more” pull when bitten into.
Milk chocolate (12 squares): Complements the semi-sweet chips with a sweeter, creamier profile. Breaking these into squares ensures they fit perfectly inside the dough ball.
Graham crackers, broken (6 sheets): Adds the necessary crunch and authentic s’more texture. Breaking them by hand creates irregular shards that distribute better than uniform crumbs.

How To Make Gooey S’mores Stuffed Chocolate Chip Cookies

Cream Butter and Sugars
Start by ensuring your unsalted butter is truly softened to room temperature; it should yield slightly to pressure but not be oily or melting. In a large mixing bowl, combine the softened butter, brown sugar, and granulated sugar. Using a hand mixer or stand mixer fitted with the paddle attachment, beat the mixture on medium speed until it becomes light, fluffy, and pale in color. This process, known as creaming, usually takes about 3 to 5 minutes. It incorporates air into the fat, which is vital for the cookie’s texture. Once the mixture looks aerated, add the two large eggs one at a time, beating well after each addition to ensure full incorporation. Finally, mix in the 2 teaspoons of vanilla extract until the batter is smooth and uniform.
Combine Dry Ingredients and Form Dough
In a separate medium bowl, whisk together the 2 1/4 cups of all-purpose flour, 1 teaspoon of baking soda, and 1/2 teaspoon of salt. Whisking ensures the leavening agents and salt are evenly distributed throughout the flour, preventing bitter spots or uneven rising. With the mixer set to low speed, gradually add the dry ingredients to the wet butter mixture. Mix only until the flour streaks disappear; overmixing at this stage will develop gluten and result in tough, cakey cookies rather than chewy ones. Once the dough comes together, stop the mixer and fold in the 1 1/2 cups of semi-sweet chocolate chips by hand using a spatula. Ensure the chips are evenly dispersed. Cover the bowl tightly with plastic wrap and refrigerate the dough for at least 1 hour. Chilling solidifies the fat, which prevents the cookies from spreading too thin in the oven and allows the flavors to meld.
Prepare the S’mores Filling
While the dough chills, prepare your stuffing components. Take the 12 large marshmallows and the 12 squares of milk chocolate. If your marshmallows are very fresh and sticky, you may want to lightly dust them with a tiny amount of cornstarch or simply handle them quickly to prevent sticking to your fingers. Break the 6 sheets of graham crackers into small, bite-sized pieces. You want shards roughly the size of a coin or slightly smaller so they fit comfortably inside the cookie without bursting the dough. Set these aside in a small bowl ready for assembly.
Stuff and Shape the Cookies
Remove the chilled dough from the refrigerator. Divide the dough into 12 equal portions. For consistency, you can weigh the dough (aiming for roughly 3-4 ounces per portion) or use a cookie scoop. Place one portion of dough onto your palm and flatten it slightly into a thick disc. Place one large marshmallow, one square of milk chocolate, and a generous pinch of the broken graham cracker pieces directly in the center of the flattened dough. Carefully gather the edges of the dough up around the filling, pinching them together to seal the filling completely inside. Roll the sealed dough ball gently between your palms to smooth out any cracks or seams. It is critical that the dough forms a tight seal; if the filling leaks out during baking, the cookie will lose its gooey center. Place the formed ball onto a prepared baking sheet lined with parchment paper or a silicone baking mat.
Bake to Golden Perfection
Preheat your oven to 350°F (175°C). Ensure the oven rack is positioned in the center of the oven for even heat distribution. Space the cookies well apart on the baking sheets, leaving at least 2 inches between them to allow for slight spreading. Bake the cookies for 14 to 18 minutes. Watch closely toward the end of the baking time. The cookies are done when the edges are golden brown and set, but the centers should still look slightly soft and puffy. Do not overbake them until they are fully firm, or the marshmallow inside may burn or harden instead of staying gooey. If your oven runs hot, check them at the 14-minute mark. Remove the baking sheets from the oven and let the cookies cool on the sheet for about 10 minutes. This resting period allows the structure to set so the cookies don’t fall apart when moved. Afterward, transfer them to a wire rack to cool completely or enjoy them warm for the maximum gooey effect.

Why This Recipe Works

The success of this recipe lies in the specific ratio of fats and sugars combined with the strategic chilling step. By using both brown and granulated sugar, the dough achieves a dual texture: the brown sugar retains moisture for a chewy center, while the granulated sugar promotes a crisp, caramelized edge. The inclusion of baking soda ensures a gentle rise without making the cookie cakey. Most importantly, the technique of chilling the dough before stuffing and baking is non-negotiable. Cold dough spreads less rapidly, giving the marshmallow and chocolate time to melt slowly within the cookie rather than leaking out immediately. This controlled melting creates the signature “gooey” explosion of flavor when the cookie is bitten into. The addition of graham cracker shards provides a textural contrast that mimics the traditional campfire s’more experience without needing a fire.

Doneness And Troubleshooting

Determining when these stuffed cookies are perfectly baked requires visual cues rather than just a timer. Look for golden-brown edges that have set firmly. The center should appear soft and slightly underdone; remember that carryover cooking will continue to bake the center while the cookie cools on the pan. If the edges are dark brown but the center is raw, lower the oven temperature by 25°F and extend the baking time slightly. Conversely, if the cookies are spreading too much and becoming flat, your butter may have been too warm. Chill the dough balls again for 15 minutes before returning them to the oven. If the marshmallow filling leaks out, it usually indicates the dough was not sealed tightly enough or the dough was too warm and soft to hold the shape. Always ensure the dough is cold and the seal is pinched securely before placing the cookie on the sheet.

Substitutions And Variations

For those with dietary restrictions or flavor preferences, several substitutions work well. You can substitute half of the all-purpose flour with whole wheat pastry flour for a nuttier flavor, though this may make the cookie slightly denser. If you prefer a darker chocolate profile, swap the semi-sweet chips for dark chocolate chips. For a dairy-free version, use a high-quality plant-based butter stick and dairy-free chocolate squares, keeping in mind that some dairy-free chocolates melt differently. While the recipe calls for large marshmallows, you can use mini marshmallows mixed with a larger piece of chocolate if you prefer a more distributed filling, though the presentation will differ. Gluten-free flour blends can replace the all-purpose flour, but ensure the blend contains xanthan gum to mimic the elasticity of gluten. Note that substitutions may alter the spread and texture, so expect slight variations in the final product.

Serving Suggestions

Close-up of finished gooey s'mores stuffed chocolate chip cookies on a white plate with melted marshmallow and chocolate stretching.

These cookies are best served warm, ideally straight from the oven or reheated briefly. The warmth melts the milk chocolate and marshmallow, creating a luscious sauce that oozes out. Serve them alongside a tall glass of cold milk or a cup of hot coffee or tea to cut through the sweetness. For a party setting, arrange the cookies on a platter with extra graham cracker sticks and a side of whipped cream for dipping. They also make an excellent dessert for potlucks, as they travel well once cooled and can be stored in an airtight container.

Storage And Reheating

Store leftover cookies in an airtight container at room temperature for up to 3 days. If you live in a humid climate, place a piece of bread in the container to help maintain moisture without making the cookies soggy. For longer storage, you can freeze the unbaked dough balls. Simply form the stuffed dough balls, place them on a baking sheet to flash freeze for an hour, then transfer them to a freezer-safe bag. When ready to bake, add 2-3 minutes to the baking time. Baked cookies can also be frozen for up to 3 months. To reheat, microwave a single cookie for 10-15 seconds to restore the gooey texture, or warm in a 300°F oven for 5 minutes. Avoid freezing cookies that have already been baked with a fully melted marshmallow center, as the texture of the marshmallow may change upon thawing.

Mastering the art of stuffed cookies opens up endless possibilities for customizing desserts. Whether you are baking for a family gathering or treating yourself to a sweet evening snack, these cookies offer a reliable and delicious result every time. For more creative dessert ideas and baking inspiration, Follow Hailee Recipes on Pinterest.

Hailee Nova