Healthy Savory Custard Pie with Onions and Eggs

In a bowl, whisk together the eggs and kefir until smooth and well combined.

Add the flour, baking powder, and salt to the egg mixture. Stir until you have a smooth batter with no lumps.

For the filling, dice the hard-boiled eggs, then mix them with finely chopped green onions and a pinch of salt.

Pour half of the batter into a greased baking dish, then spread the filling on top.

Cover the filling with the remaining batter and smooth out the top with a spoon.