Preheat the oven to 180°C (356°F).
Add eggs to a bowl and beat well.
Mix in Greek yogurt, unsweetened cocoa powder, almond flour, protein powder, baking powder, and stevia.
Pour the batter into muffin tins or small oven-safe dishes.
Bake at 180°C (356°F) for 20 minutes.
Let cool before serving.