How to make
Cut the leeks and fry them in butter. Add the fried onions to the baking powder and flour. In separate a bowl, put the cream and salt, mix with cheese and gradually mix with the flour.
Stir until you get a homogenous mixture. The mixture is placed into a greased baking tray and baked for about 30 minutes in a preheated 360°F (180 °C) oven.