01 - Preheat oven to 350°F. Line baking sheet with parchment paper.
02 - In medium bowl, whisk together almond flour, coconut flour, erythritol, sea salt, and baking powder until well blended.
03 - In large bowl, beat softened butter with hand mixer until light and fluffy.
04 - Beat in egg, maple extract, and vanilla extract until mixture is smooth and well combined.
05 - Add dry ingredients to wet ingredients. Mix until soft dough forms.
06 - Fold in chopped walnuts until evenly distributed throughout dough.
07 - Scoop tablespoon-sized dough portions. Roll into balls and place on prepared baking sheet, spacing apart.
08 - Gently flatten each ball with fork to create classic cookie pattern.
09 - Bake 10–12 minutes until edges are golden brown.
10 - Let cookies cool on baking sheet 10 minutes. Transfer to wire rack to cool completely.