Begin by preparing the cookie dough. In a bowl, mix melted butter, vanilla extract, coconut sugar, and room temperature egg until well combined.
Fold in the all-purpose flour, baking soda, and salt.
Add the chocolate chunks and mix until fully incorporated. Cover the dough and chill in the refrigerator for at least 30 minutes.
Preheat the oven to 375°F and line a baking sheet with parchment paper.
Place 5 graham cracker squares on the baking sheet and top each with a piece of chocolate and a large marshmallow.
Use a cookie scoop to form the chilled dough into balls. Flatten each ball between your palms and then press onto the s'mores, ensuring they adhere firmly.
Bake for 10-11 minutes, then let cool for 5 minutes before enjoying!