01 - Preheat the oven to 350 degrees Fahrenheit. Line a baking sheet with parchment paper.
02 - Whisk together almond flour, coconut flour, ground cinnamon, baking soda, and salt in a medium bowl until evenly mixed.
03 - In a large bowl, beat the softened butter and erythritol with an electric mixer until light and fluffy. Add the egg and vanilla extract, mixing until smooth.
04 - Gradually blend the dry mixture into the wet ingredients, stirring gently until a consistent dough forms.
05 - Drop heaping tablespoons of dough onto the prepared baking sheet, spacing them approximately 2 inches apart. Flatten each slightly with your palm or the back of a spoon.
06 - Bake for 12 to 15 minutes, or until edges are golden and centers are set. Remove and cool completely on a wire rack.
07 - Beat together cream cheese and butter until smooth. Incorporate powdered erythritol and vanilla extract, mixing to a creamy consistency.
08 - Spread the frosting onto cooled cookies. Optionally, dust with additional ground cinnamon. Refrigerate until serving.