Preheat the oven to 180°C (356°F).
Wash the blueberries thoroughly and drain well.
In a bowl, combine almond flour, baking powder, and salt.
In another bowl, mix eggs, erythritol, vanilla extract, and coconut oil until well combined.
Add the wet ingredients to the dry ingredients and mix until evenly blended.
Gently fold the blueberries into the batter.
Divide the batter evenly into muffin molds.
Bake in the oven for 20–25 minutes.