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a bunch of cookies sitting on a piece of brown parchment
5 from 1 vote
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Double Chocolate S'mores Cookie Recipe

A rich, chewy dark chocolate cookie stuffed full of buttery honeyed graham crackers, sweet chocolate chips and a gooey homemade marshmallow center.
Servings 8 cookies
Prep 20 mins
Cook 12 mins
Total 1 hr 17 mins
Course : Dessert
Cuisine : American


  • small pot
  • thermometer
  • 4qt stand mixer, mixing bowl, and whisk attachment
  • medium mixing bowl
  • baking tray
  • parchment paper


For the Marshmallow Fluff

  • 1 ½ packets gelatin, about 1 ½ tbsp
  • ¼ cup cold water
  • ¾ cup sugar
  • ½ cup agave nectar
  • 1 teaspoon vanilla extract

For the Cookie Dough

  • ½ cup unsalted butter, 1 stick
  • ¾ cup dark brown sugar
  • ¼ cup white sugar
  • 1 large egg, room temperature
  • ½ teaspoon baking powder
  • ½ teaspoon baking soda
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • cup cocoa powder
  • cup crushed grahama cracker crumbs
  • ¼ cup semi-sweet chocolate chips
  • ½ cup homemade or store bought marshmallow fluff if using store bought marshmallow fluff, place in the fridge while you make the cookie dough to firm up before using


Making the Marshmallow Fluff

  • In a stand mixing bowl, add the gelatin and cold water and mix to combine. Attach the whisk attachment.
    1 ½ packets gelatin, about 1 ½ tbsp, ¼ cup cold water
  • In a small pot, add the sugar and agave and place on the stove over medium high heat. Boil the sugar for 7-8 minutes, or until the sugar reaches 240 degrees F. Then start the mixing bowl to start whisking on low, speed 2-3. Slowly pour in the hot sugar into mixing bowl until it's all added. Turn the mixer up to high, speed 6 and whip for 2 minutes.
    ¾ cup sugar, ½ cup agave nectar
  • Stop the mixer and add the vanilla extract. Mix just until combined. Place the marshmallow into a small bowl or container and place it in the fridge.
    1 teaspoon vanilla extract
  • If using store bought marshmallow fluff, also throw it in the fridge while you make the cookie dough.

Making the Chocolate Cookie Dough

  • In a medium bowl, melt the butter in the microwave. It should just be melted! Then add the brown and white sugar. Whisk to combine.
    ½ cup unsalted butter, 1 stick, ¾ cup dark brown sugar, ¼ cup white sugar
  • Add the room temperature egg and vanilla extract and whisk to combine them into the butter and sugar.
    1 large egg, room temperature, 1 teaspoon vanilla extract
  • Add the cocoa powder, flour, baking powder, baking soda, chocolate chips, graham cracker crumbs, and mix with a spoon to combine.
    ½ teaspoon baking soda, 1 cup all-purpose flour, ⅓ cup cocoa powder, ⅓ cup crushed grahama cracker crumbs, ¼ cup semi-sweet chocolate chips, ½ teaspoon baking powder
  • Using a large cookie scoop, scoop the cookies on to a parchment lined baking tray, there should be about 8 cookies. Then take the marshmallow fluff from the fridge. If the marshmallow is still really sticky, spray your hands with some non stick cooking spray before handling. Then rip off about 1 tablespoon pieces of marshmallow and place it on top of the dough ball.
    ½ cup homemade or store bought marshmallow fluff
  • Using your hands, cup the dough up and around the sides of the marshmallow so that you can still see the top of it, but its encased completely in the dough. This will prevent the marshmallow from oozing out of the cookie while its baking.
  • Once all the dough balls have been stuffed with the marshmallow, place them back on the parchment lined tray and sprinkle them with extra graham crumbs. Place the tray in the fridge for at least 45 minutes to an hour.
  • Then preheat the oven to 350 and bake the cookies for 12-13 minutes. Let them cool completely before removing. Enjoy!


If you make this recipe, let me know how it went in the comments below, I'd love to hear from you! You can also tag me on Instagram or Facebook so I can check it out!
Step by step process photos are provided above, in the body of this post.

Expert Tips

  • Always spoon measure your flour when baking- This means using a spoon to fluff the flour first, then spoon it into your measuring cup. This will give the most accurate results when baking without a kitchen scale.
  • Let the dough chill- Let the dough chill for at least 45 minutes to an hour. This will help the marshmallow stay in the center of the cookie while it bakes and not spill out over the sides. If you can keep them in the fridge for at least 24 hours, that's even better!
  • Drop the tray after baking- When the cookies come out of the oven, give them a nice drop on the counter to flatten the cookie even more.


Serving: 1cookie | Calories: 333kcal | Carbohydrates: 49.5g | Protein: 3.7g | Fat: 14.6g | Saturated Fat: 8.9g | Cholesterol: 52mg | Sodium: 204mg | Potassium: 191mg | Fiber: 1.8g | Sugar: 29.4g | Calcium: 48mg | Iron: 2mg