01 - Set the oven temperature to 350°F and line a baking sheet with parchment paper.
02 - In a medium bowl, whisk together almond flour, coconut flour, baking soda, and sea salt.
03 - In a large bowl, beat the softened butter and brown sugar substitute until creamy and smooth.
04 - Add the egg and vanilla extract to the creamed mixture and mix until fully blended.
05 - Gently fold the dry ingredients into the wet mixture until a soft dough forms.
06 - Use a tablespoon or cookie scoop to drop dough onto the prepared sheet, spacing them approximately 2 inches apart.
07 - Slightly flatten each dough mound with fingers or the back of a spoon.
08 - Bake for 10 to 12 minutes until cookie edges turn golden; centers may appear soft but should not be overbaked.
09 - Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
10 - Once cooled, dust cookies with powdered erythritol to achieve a snowy appearance.