In a mixing bowl, combine all the ingredients: almond flour, eggs, ground flaxseed, plain Greek yogurt, xanthan gum, baking powder, apple cider vinegar, and a pinch of salt. Mix everything well until you have a smooth and uniform batter.
Pour the prepared batter into a loaf pan that has been thoroughly greased.
Bake in the preheated oven for 30-40 minutes, or until the bread is golden brown and a knife or toothpick inserted into the center comes out clean.
Once baked, remove the loaf from the oven and let it cool completely to room temperature before slicing. This step is crucial for the best texture!