My French onion soup pie skips the unimportant part of French onion soup (the soup) and focuses entirely on the good stuff (the French bread that takes on the soup’s flavor and the gobs of gruyère cheese). It tastes just like French onion soup but it’s sliceable and has the texture of a bread pudding.
French onion soup pie starts with a pie crust made of French bread soaked in egg, cream, beef stock, and spices. The crust is covered in sauteed sweet onions which are topped with even more egg mixture and a thick layer of cheese.
French Onion Soup Pie Recipe