Beat the eggs lightly, mix with the yogurt, water, softened butter, flour and feta. The mass should be thick - if necessary, dilute with a little milk.
Pour into a greased baking dish - approx. 30 x 45 cm - and spread the olive oil mixed with the milk over it. Bake at 180 degrees for about 45 minutes.
This results in a thin flatbread that can be filled or, cut into narrow slices, is very suitable as finger food.