Preheat oven to 300F and prepare cookie sheet with parchment paper.
In a bowl mix all dry ingredients.
In a small separate bowl mix the egg (or flax egg) with maple syrup. Add to dry ingredients and combine into a sticky dough. If too sticky add tapioca flour.
Wrap in foil and place in the refrigerator for about 15 minutes.
On a floured surface roll out dough to 1/4 inch thickness. Cut out cookies with a preferred cookie cutter and place on the cookie sheet.
Bake for about 10-13 minutes in the oven.
Take cookies out of the oven and let them cool down for about 15 minutes. Transfer cookies onto a plate or baking sheet and apply icing (optional) to decorate cookies.
Store cookies in an airtight container for up to one week.