There's an entire s'more baked inside these chewy s'mores chocolate chip cookies with toasty marshmallow, crisp graham cracker, and melty chocolate in every bite.
In a large bowl, add melted butter, both sugars, and vanilla and whisk to combine.
½ cup unsalted butter, ½ cup dark brown sugar, ¼ cup granulated sugar, 1 ½ teaspoons vanilla extract
Add eggs and whisk well until the mixture is glossy and a bit lighter in color, about 1 minute. Let the mixture stand for about 5 minutes while you prepare the next ingredients.
1 large egg
In a medium bowl, add flour, cornstarch, baking soda, and salt and whisk to combine.
1 ⅛ cups all-purpose flour, 1 teaspoon cornstarch, ½ teaspoon baking soda, ½ teaspoon fine sea salt
Give the sugar mixture a quick whisk and then add the flour mixture. Use a wooden spoon or a spatula to gently stir the flour mixture into the sugar mixture. Stir just until mixed.
Add chocolate chips and stir just until blended.
1 cup semisweet chocolate chips
Assemble the cookies.
Place graham cracker squares onto a tray. Place 2 rectangles of a Hershey bar onto each graham cracker followed by one marshmallow half per cookie.
Scoop a 1 ½ Tablespoon ball of dough and use your thumbs to press a hole into the middle so that the dough is donut shaped. Place the ring of dough over the marshmallow so it peeks through the center, pressing the sides down towards the graham cracker. Repeat for each cookie.
Place the remaining graham cracker squares in a sealed plastic bag and use a rolling pin or measuring cup to gently smash the cookies to crumbs. Sprinkle the crumbs over the cookie dough balls.
2 graham cracker squares
Chill the assembled cookies in the fridge for 30 minutes. While the unbaked cookies chill, preheat the oven to 350°F.
Bake the cookies.
Bake the cookies 6 at a time on baking sheets lined with parchment paper for 10 to 12 minutes. The cookies should appear just golden around the edges with toasty marshmallows in the center. Immediately press a rectangle of milk chocolate onto each cookie.
1 ½ milk chocolate Hershey bars
Let the cookies cool on the tray for 5 minutes before transferring to a wire rack to cool completely.
Video
Notes
Storage: Once completely cooled, store cookies in an airtight container at room temperature for up to 4 days.