Preheat your oven to 325°F (163°C) and prepare a 9x5 loaf pan by greasing it or lining it with parchment paper.

In a large mixing bowl, combine almond flour, granulated sweetener, baking powder, and salt. Whisk until thoroughly combined.

Add plain yogurt (or coconut cream), fresh lemon juice, eggs (or flax eggs), and lemon zest to the dry mixture. Blend until smooth.

Pour the batter into the prepared loaf pan, smoothing the top with a spatula.

Bake for about 50 minutes, until golden brown and a toothpick inserted comes out clean.

Remove from the oven and let it cool completely in the pan for at least 30 minutes.

Carefully transfer to a cutting board and serve plain or with sugar-free icing.