Preheat oven to 350°F (180°C) and line muffin tin with paper cases
In a large bowl, combine almond flour, baking soda, kosher salt, and sweetener.
In a separate bowl, combine the eggs, butter, almond milk, and vanilla extract
Add the egg mixture to the almond flour mix. Combine well to form a batter.
Fold blueberries into the batter. Aim for even distribution through the mixture.
Scoop batter into muffin tin, aiming to fill each case ⅔ full
Move tray to oven and bake for 15 minutes, until muffins are golden and have set
Remove muffins from the oven. Transfer cases to wire rack and leave to cool for at least 20 minutes.