01 - Preheat oven to 350°F. Line a baking sheet with parchment paper.
02 - In a medium bowl, whisk together almond flour, coconut flour, erythritol, baking powder, and salt until thoroughly blended.
03 - In a large bowl, beat softened butter until creamy. Add egg, vanilla extract, and orange zest, mixing until well combined and smooth.
04 - Gradually fold dry ingredients into wet mixture, stirring until a soft, cohesive dough forms. Be careful not to overmix.
05 - Scoop tablespoon-sized portions of dough, roll into balls, and place on prepared baking sheet. Gently flatten each cookie with palm or fork to desired thickness.
06 - Bake for 10 to 12 minutes, until edges are lightly golden. Cookies will appear soft when hot but will firm as they cool.
07 - Allow cookies to cool completely on baking sheet for optimal texture. Store in an airtight container at room temperature for up to 5 days.