Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a medium-sized mixing bowl, whisk together the dry ingredients: gluten-free all-purpose flour, cocoa powder, almond flour, tapioca flour, baking powder, baking soda, and salt.
In a separate large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
Add the egg (or flax egg) and vanilla extract to the wet ingredients, and mix until well combined.
Gradually add the dry ingredient mixture to the wet ingredients, mixing until a soft cookie dough forms.
Gently fold in the three types of chocolate chips: dark, white, and semi-sweet. This will create a delightful triple chocolate experience.
Drop rounded tablespoons of dough onto the prepared baking sheet, leaving some space between each cookie.
Bake in the preheated oven for 10-12 minutes or until the edges are set, but the centers are still soft.
Remove the cookies from the oven and allow them to cool on the baking sheet for a few minutes. Then, transfer them to a wire rack to cool completely.
Once cooled, your triple chocolate Christmas gluten-free cookies are ready to be enjoyed. They're a chocolate lover's dream and a perfect addition to your holiday dessert spread.