Slice onions thin; set them in butter till they are soft, and, when they are cold, put into a pan to a quart basin of these stewed onions the eggs, bread crumbs, salt, and cream. Put common pie-crust in a tin; turn it up all round, like a cheesecake, and spread the onions over the cake; beat up an egg, and with a brush spread it in, and bake it of a fine yellow.
The Lady's Own Cookery Book (1844).