Preheat the oven to 350°F (175°C).

Line a loaf pan with parchment paper.

In a mixing bowl, whisk together the almond flour, ground flaxseed, baking soda, and salt.

In another bowl, beat the eggs, then add the almond milk, honey or maple syrup, and apple cider vinegar; mix until combined.

Pour the wet ingredients into the dry mixture and stir until just combined without overmixing.

Transfer the batter into the prepared loaf pan and spread evenly.

Bake for 40 minutes at 350°F (175°C) or until a toothpick inserted into the center comes out clean.

Let the bread cool in the pan for 10 minutes, then transfer to a cooling rack to cool completely before slicing.