First cut vegetables in cubes and boil in water... Half boil ony put little salt.and strain in and keep aside. In a pan put butter and maida in a low flame add milk and stir it continually, if it become thick  add egg mix it, add pepper also, in this white sauce add vegetables..in a pie dish pour it.decorste with the item which I mentioned. Preheat the oven in 180  degree for half an hour... Bake the upper part also.... It's ready 😊