Between the gluten-free graham cracker crumbs, melty Hershey's chocolate, and gooey marshmallow center, these gluten-free s'mores cookies capture all the flavors of your favorite campfire treat in one bakery-style cookie!
Place the marshmallows in the freezer before you begin preparing the cookie dough. They need at least 1 hour, up to overnight, to fully freeze.
Make the Cookie Dough
In the bowl of a stand mixer fitted with the paddle attachment, cream together the butter, brown sugar, and granulated sugar until light and fluffy, about 2 to 3 minutes.
Add the egg and vanilla extract and mix until fully incorporated.
In a separate bowl, whisk together the gluten-free flour, graham cracker crumbs, baking soda, and salt.
Add the dry ingredients to the butter mixture and mix on low speed just until combined.
Fold in the chocolate chips and chopped Hershey's chocolate.
Using a large cookie scoop (about ¼ cup), portion the dough into 12 equal portions. Place the dough portions on a parchment-lined baking sheet and refrigerate for at least 1 hour.
Bake the Cookies
Preheat the oven to 350°F. Line two baking sheets with parchment paper.
Flatten one portion of dough into a disk. Place a frozen marshmallow in the center and wrap the dough around the marshmallow, leaving the top of the marshmallow exposed. Roll gently into a smooth ball.
Press one small gluten-free graham cracker into the bottom of each cookie dough ball, then place the cookie graham cracker-side down on the prepared baking sheet. Repeat with the remaining dough, leaving about 3 inches between cookies. (Bake 6 per standard size cookie sheet.)
Bake for 13 to 15 minutes, or until the edges are lightly golden and the marshmallow is toasted.
If desired, press a few extra pieces of chopped Hershey's chocolate and a few extra graham cracker crumbs into the gooey edges of the warm marshmallow for garnish.
Allow the cookies to cool on the baking sheet for 5 to 10 minutes before transferring to a wire rack to finish cooling.
Notes
Bob's Red Mill Gluten Free 1-to-1 Baking Flour produced the best cookies during testing. Cup4Cup also works, but the cookies spread a bit differently.
Don't skip freezing the marshmallows. This helps keep the marshmallow centers gooey instead of completely melted.
The graham cracker underneath the cookie is necessary. It helps insulate the marshmallow during baking.
These cookies are best enjoyed the day they are baked but will keep in an airtight container at room temperature for 2 to 3 days.