Preheat your oven to 350°F (175°C). Prepare your muffin tin by placing 8 liners inside each cup, or give them a light coating of oil to prevent sticking.
In a mixing bowl, blend the eggs, melted coconut oil, sweetener, and vanilla until smooth and well combined.
Stir in almond flour, baking powder, and sea salt until just combined.
Gently fold in the blueberries with a spatula.
Divide the batter evenly among the muffin cups.
Place the muffin tin in the oven and bake for 22 to 25 minutes, until the tops are lightly golden and a toothpick inserted in the center comes out with just a few moist crumbs.
Allow the muffins to rest in the tin for about 5 minutes before gently moving them to a cooling rack.