This is not how you make Quiche Lorraine. Real Quiche Lorraine is made with eggs cheese and bacon and onions and with flour and salt and pepper and milk and butter. Mushrooms. You mix the flour eggs and milk then add the butter and bacon,onions, cheese and mushrooms. The flour makes the crust with the other ingrediants inside. This if from my sister in Belguim they laughed like crazy when I said they use pie crust. She said OH NO that is not real quiche.