Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a medium bowl, whisk together the almond flour, coconut flour, sweetener, baking powder, and salt.
In another bowl, mix together the almond butter, egg, and almond extract until smooth.
Combine the wet and dry ingredients, mixing until a dough forms.
Scoop tablespoon-sized portions of dough and roll into balls. Place them on the baking sheet, flatten slightly with your fingers, and top with a sliced almond.
Bake for 10-12 minutes, or until golden brown around the edges.
Let the cookies cool on the sheet for a few minutes before transferring them to a wire rack to cool completely.
These cookies are delicious and keto-friendly, giving you that traditional almond cookie flavor with no added sugar!