01 - Preheat oven to 350°F. Line a baking sheet with parchment paper.
02 - Whisk almond flour, coconut flour, baking soda, and salt in a medium bowl until uniform.
03 - Beat softened butter and erythritol with hand mixer until light and fluffy, approximately 2 minutes.
04 - Mix in egg, vanilla extract, and maple extract until fully incorporated and smooth.
05 - Gradually blend dry ingredients into wet mixture, mixing until soft dough comes together.
06 - Fold chopped macadamia nuts into dough until evenly distributed.
07 - Drop tablespoon-sized dough balls onto prepared baking sheet, spacing 2 inches apart. Press lightly to flatten.
08 - Bake 10 to 12 minutes until edges turn golden brown.
09 - Let cookies rest on baking sheet 5 minutes, then transfer to wire rack to cool completely.