Preheat the oven to 180°C (356°F).
Wash the blueberries thoroughly.
Add eggs and Greek yogurt to a bowl and mix well.
Add almond flour, baking powder, and erythritol, and mix evenly.
Add the blueberries and fold gently.
Pour the batter into a cake mold.
Bake in the oven for 25-30 minutes.
After cooling, cut into desired sizes.