Grate the carrot using a grater and set aside.
Combine eggs, oat flour, Greek yogurt, stevia, and baking powder in a bowl and mix well.
Add the grated carrot and chopped nuts to the batter and mix evenly.
Pour the batter into muffin tins or an oven pan.
Bake in a preheated oven at 180°C for 20 minutes.