Preheat oven to 350°F and line a baking sheet with parchment paper.
In a medium bowl, add almond flour, coconut flour, baking powder, and salt. Whisk until combined and smooth in consistency.
In a separate bowl, beat softened butter and erythritol until fully incorporated. Add the egg and beat well. Add the lemon juice, zest, and stevia, whisking until combined.
Add the dry ingredients and combine until a soft dough forms. Chill in the fridge for 10 minutes.
Roll the cold dough into small balls, about 1-1.5 inches in size, and place on the baking sheet.
Bake for 10-14 minutes, removed from oven and allow to cool while making the glaze.
Combine the powdered sweetener with 1 tablespoon lemon juice in a small bowl. Stir until smooth. Add additional lemon juice if needed. Spread on the cooled cookies.
If desired, garnish with lemon zest prior to serving. Best stored in an air tight container in the fridge up to 1 week.
Video
Notes
Net Carbs: 2g per cookie ball Yields: 20 cookie balls