Preheat the oven

• Preheat the oven to 175 °C.
• Line a baking sheet with parchment paper.

Mix the dry ingredients

• In a bowl, mix the flour, baking soda and salt.
• Set aside.

Combine the wet ingredients

• In a separate bowl, combine the melted butter, brown sugar, granulated sugar, egg and vanilla extract.
• Whisk until a smooth paste forms.

Make the cookie dough

• Add the dry ingredients to the wet batter and gently fold until just combined.
• Add the chocolate chips and mix with a spatula without overmixing.

Assemble the s'mores cookies

• Arrange the graham crackers on the prepared baking sheet.
• Top each cracker with a chocolate wafer, a few mini marshmallows and a spoonful of cookie dough.

Bake

• Bake until the edges are golden and crispy and the centers are gooey.

Cool and serve

• Remove from the oven.
• Allow the cookies to cool completely on the baking sheet before serving.