Preheat the oven

• Preheat the oven to 350 F.
• Line a baking sheet with parchment paper and set aside.

Mix the wet ingredients

• In a bowl, add the melted butter, granulated sugar and brown sugar.
• Mix until well combined.
• Crack in the egg and whisk until smooth.
• Add the vanilla bean paste and mix to combine.

Combine the dry ingredients

• In a separate bowl, combine the all purpose flour, baking soda and espresso powder.
• Mix well to combine.

Make the cookie dough

• Gradually incorporate the dry ingredients into the wet batter until just combined.
• Add the chocolate chips and mix just to combine, avoiding overmixing.

Assemble the s'mores cookies

• On the prepared baking sheet, place the graham cracker squares and top them with the chocolate rectangles.
• Add a marshmallow on top of each.
• Scoop out a portion of cookie dough, flatten it slightly and place it on top of the marshmallow, covering it completely.
• Place 3-4 cookies on one baking sheet, spacing them 2-3 inches apart.

Bake the cookies

• Bake until the edges are golden and crispy and the center is chewy and soft.

Cool and serve

• Let cool completely before serving.