Beat the eggs with the oil very well to whitening. Add the flour sifted with the baking powder, stir and gradually pour in the milk.
Stir the pie mix very well and pour into a greased and slightly floured form. Spread with a beaten egg yolk on top.
Put the french salty pie to bake in a preheated 356°F (180 °C) oven for about 40-50 minutes.