In large bowl, whisk together 1 cup almond flour, 1 cup arrowroot flour, ⅓ cup coconut flour, and 1 teaspoon sea salt.
1 cup almond flour, 1 cup arrowroot flour, ⅓ cup coconut flour, 1 teaspoon sea salt
Heat 1¼ cup filtered water to 105 to 110 degrees F / 40 to 43 degrees C. Add 2 teaspoons maple syrup and stir. Add 2 teaspoons active dry yeast and let stand for 10 minutes.
2 teaspoons maple syrup, 2 teaspoons active dry yeast
Stir 1½ tablespoons chia seeds and 2 tablespoons psyllium husk powder into yeast mixture. Let stand for 2 to 3 minutes to thicken, then whisk.
1½ tablespoons chia seeds, 2 tablespoons psyllium husk powder
Pour yeast-chia mixture into dry ingredients and mix with wooden spoon until thick and fully combined. Dough should be slightly sticky, but workable. Knead for one minute.
Put kneaded dough back into bowl. Cover with damp cloth and place in warm spot to rise for one hour.
Preheat oven to 425 degrees F / 218 degrees C. Place baking sheet or baking stone in oven.
Cut dough in half and shape into two balls. Place dough balls on parchment paper or cutting board.
1 egg
Mix 1 egg yolk and water to create egg wash. Brush dough with egg wash. Cut criss-cross pattern on top of dough with knife.
Place dough on hot baking sheet with parchment paper or hot baking stone. Bake for 35 to 40 minutes. The measure of doneness is an internal temperature of 205 to 210 degrees F / 96 to 98 degrees C.
Let cool completely on wire rack. When cool, slice and serve or store in an air-tight container.