01 - Preheat oven to 350°F. Line a baking sheet with parchment paper.
02 - In a medium bowl, whisk together almond flour, coconut flour, baking soda, and salt. Fold in chopped pecans until evenly distributed.
03 - In a large bowl, beat softened butter and erythritol together using a hand mixer or stand mixer until light and fluffy, about 2 minutes.
04 - Beat in the egg, maple extract, and vanilla extract until fully incorporated and the mixture is smooth.
05 - Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed until a thick, cohesive dough forms.
06 - Scoop tablespoon-sized portions of dough and roll into balls. Arrange on the prepared baking sheet, spacing approximately 2 inches apart.
07 - Gently flatten each dough ball with the palm of your hand or the bottom of a glass. Sprinkle with additional chopped pecans if desired.
08 - Bake for 13 to 15 minutes, or until the edges are golden brown and the centers are set.
09 - Allow cookies to rest on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely before serving or storing.