Preheat the oven to 350°F and line a baking sheet with parchment paper.
In a bowl, cream together butter, brown sugar, and granulated sugar using an electric mixer.
Add egg and vanilla extract, mixing until well combined.
Stir in flour, espresso powder, salt, and chopped pecans until a dough forms.
Scoop tablespoon-sized portions of dough and place them on the baking sheet.
Bake for 10-12 minutes or until golden brown at the edges.
Let the cookies cool on a wire rack.
For the dip, melt chocolate chips and heavy cream over a double boiler or in the microwave.
Stir in coffee granules until dissolved.
Dip each cookie halfway into the coffee-infused chocolate, allowing excess to drip off.
Place the dipped cookies on the cooling rack to set.