A shredded potato casserole
Unlike standard potato gratins that rely on sliced tubers and raw cream sauces, this casserole utilizes shredded potatoes bound by a rich mixture of sour cream and condensed soup. Grating potatoes releases starch, so rinse the shreds in cold water and dry them completely before mixing to prevent a gummy texture. Dairy components can easily be swapped. Use plant-based sour cream and a vegan mushroom soup to maintain the necessary moisture levels without animal fats. Bake the dish in a 9x13 inch glass or ceramic pan at 350 degrees Fahrenheit. The crushed corn flake topping requires thorough coating in melted fat to achieve an even crunch during the one-hour bake time.
Cool any remaining portions within two hours of baking and transfer them to an airtight container. Refrigerate for up to four days. Reheat individual portions in a conventional oven at 350 degrees Fahrenheit to restore the crispiness of the cereal crust, as microwaves will soften the topping.