Preheat your oven to 350 degrees F. While the oven is preheating, place your macadamia nuts on a baking tray lined with parchment paper. Once the oven is done preheating, place the tray inside and bake the nuts for 7-10 minutes or until lightly brown and fragrant. Once done, set aside to cool. 

In a medium-sized bowl, cream together your butter and sugar for 5 minutes. Add in the maple syrup and mix. Beat in the egg until well-incorporated. Stir in the vanilla and coffee extract. 

Sift in the flour, baking powder, and salt. Stir until combined. Add in the chocolate and chopped macadamia nuts. Using a cookie scoop, divide the dough into 16 equal pieces. Place the balls onto a prepared cookie sheet, setting each piece about 2 inches apart. Flatten each piece slightly and sprinkle with espresso powder. Bake the cookies for 12-14 minutes. Let cool on pan for 5 minutes before transferring to a wire rack to cool completely. When you are done store them in a cookie jar or eat them all at once!