In a large bowl, whisk together the almond flour, coconut flour, 1 teaspoon cinnamon, and 1/4 cup sugar until evenly combined.
In a microwave-safe bowl or small saucepan over low heat, warm the almond butter and maple syrup together until smooth and pourable, stirring to combine.
Pour the wet mixture into the dry ingredients and stir until a crumbly dough forms. Add milk 1 tablespoon at a time if needed until the mixture holds together into a thick, formable batter.
Use your hands to roll tablespoon-sized portions of dough into balls and place them on a plate or baking sheet.
In a small bowl, mix the remaining 1 tablespoon cinnamon with 1 tablespoon sugar. Gently roll each ball in the cinnamon-sugar mixture to coat.
Refrigerate the coated balls for about 10 minutes, or until firm, then serve or store as desired.