01 - Preheat the oven to 350°F. Line a baking sheet with parchment paper.
02 - In a medium bowl, whisk together almond flour, cocoa powder, coconut flour, baking powder, salt, and espresso powder.
03 - In a large bowl, cream the softened butter and erythritol with a hand mixer until light and fluffy.
04 - Beat in the egg and vanilla extract until the mixture is well combined.
05 - Gradually add the dry ingredients to the wet mixture, mixing until a soft dough forms.
06 - Fold in the sugar-free dark chocolate chips evenly.
07 - Using a tablespoon or cookie scoop, portion the dough onto the prepared baking sheet, leaving about 2 inches of space between cookies.
08 - Gently flatten each cookie dough ball with your fingers or the back of a spoon.
09 - Bake for 10 to 12 minutes, until the edges are set but the centers appear slightly soft.
10 - Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.