01 - Set oven to 350°F and line a baking sheet with parchment paper.
02 - Whisk together almond flour, coconut flour, baking soda, salt, ground ginger, cinnamon, nutmeg, and cloves in a medium bowl.
03 - In a large bowl, beat softened butter and erythritol until light and fluffy, about 2 minutes.
04 - Add egg, almond milk, and vanilla extract to the butter mixture and blend thoroughly.
05 - Gradually mix dry ingredients into wet ingredients until a soft dough forms; fold in crystallized ginger if using.
06 - Scoop tablespoon-sized dough balls onto the prepared sheet spacing 2 inches apart; flatten slightly.
07 - Sprinkle dough tops with erythritol if desired.
08 - Bake for 12 to 15 minutes, until edges turn golden and centers are set.
09 - Allow to cool on baking sheet for 5 minutes, then move to wire rack to cool completely.