Step 1

Preheat the oven to 350°F. Butter an 8 1/2" x 4 1/2" loaf pan.

Step 2

, Combine the almond and coconut flours, flax meal, salt, baking powder, baking soda, and xanthan gum in a large mixing bowl.

Step 3

, Mix together the water, eggs, butter, and vinegar in a separate bowl or measuring cup then stir into the dry ingredients, mixing thoroughly.

Step 4

, Pour the batter into the prepared pan, smoothing the top if necessary.

Step 5

, Bake the bread for 30 to 35 minutes, until golden brown and a toothpick inserted into the center of the loaf comes out clean.

Step 6

, Remove the bread from the oven and use a spatula to loosen it from the edges of the pan. Transfer the bread from the pan to a rack to cool completely before serving.

Step 7

, Store bread at room temperature, well wrapped, for up to 5 days.