In a mixing bowl, combine almond flour, coconut flour, and baking soda. Mix in melted butter, maple syrup, and vanilla extract until a soft dough forms. Chill if too sticky.

In a small bowl, mix softened butter, coconut sugar, and cinnamon until smooth.

Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Place dough between parchment paper and roll out to 1/4 inch thickness. Cut out 3-inch circles.

Lay half of the dough circles on the baking sheet, add filling, top with another circle, and seal edges.

Bake for 14-16 minutes until edges are golden brown.

Cool cookies on a wire rack. Whisk together powdered sugar, cinnamon, milk, and vanilla for frosting. Drizzle over cooled cookies.