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 sea salt.
03 - In a large bowl, mix melted butter and granulated erythritol until smooth. Whisk in egg, vanilla extract, and maple extract.
04 - Gradually incorporate dry ingredients into the wet mixture until a uniform soft dough forms.
05 - In a small bowl, blend almond butter with powdered erythritol and maple extract until fully combined.
06 - Scoop tablespoon-sized portions of dough onto the prepared baking sheet, spacing cookies 2 inches apart.
07 - Form a small indentation in the center of each dough ball using the back of a spoon. Add about 1/2 teaspoon of the almond butter mixture into each well.
08 - Use a toothpick or tip of a knife to gently swirl the almond butter mixture into the dough.
09 - Bake cookies for 10 to 12 minutes, or until edges are golden and centers are set.
10 - Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.