Instructions:
- Preheat the oven to 350°F (175°C). Grease a 9×5 inch loaf pan.
- In a medium bowl, whisk together the almond flour, coconut flour, baking powder, salt, and erythritol.
- In a large bowl, cream together the butter and erythritol until light and fluffy.
- Add the eggs, lemon zest, lemon juice, and vanilla extract to the butter mixture and beat until well combined.
- Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
- Fold in the blueberries.
- Pour the batter into the prepared loaf pan and smooth the top with a spatula.
- Bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean.
- Allow the bread to cool in the pan for 10 minutes, then remove it from the pan and transfer it to a wire rack to cool completely.
- Serve the bread warm or at room temperature, topped with additional lemon zest, if desired.
Enjoy your delicious and healthy keto blueberry lemon bread!