01 - Preheat the oven to 350°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together almond flour, ground hazelnuts, cocoa powder, erythritol, baking soda, and salt until thoroughly blended.
03 - In a separate bowl, whisk the melted butter, egg, and vanilla extract until smooth and fully combined.
04 - Pour the wet ingredients into the dry ingredients. Mix until a cohesive dough forms.
05 - Gently fold in the chocolate chips and chopped hazelnuts until evenly distributed throughout the dough.
06 - Scoop tablespoon-sized portions of dough onto the prepared baking sheet, spacing about 2 inches apart. Flatten each portion gently with your fingers or the back of a spoon.
07 - Bake for 10 to 12 minutes, until edges are set and centers remain slightly soft.
08 - Let cookies cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.