01 - Preheat oven to 325°F. Line a baking sheet with parchment paper.
02 - Whisk together almond flour, coconut flour, erythritol, baking powder, and salt in a medium bowl.
03 - Beat softened butter until creamy in a large bowl. Add eggs one at a time, beating well after each addition.
04 - Stir in vanilla extract and heavy cream into the butter and eggs mixture.
05 - Gradually add dry ingredients to the wet mixture, stirring until a soft, fluffy dough forms.
06 - Drop tablespoon-sized mounds of dough onto prepared baking sheet, spacing them about 2 inches apart.
07 - If desired, sprinkle shredded coconut over each cookie before baking.
08 - Bake for 15 to 18 minutes until edges turn lightly golden and centers are set.
09 - Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.
10 - Dust cookies with additional powdered sweetener before serving, if desired.