Preheat oven to 425F (218.333C)

Butter a 9 by 13 inch baking dish

Spread onions evenly on bottom and place anchovies on top of the onions

Place potatoes on top of the anchovies and pour in your cream

Mix bread crumbs with the butter and place on top of your potatoes

Place your meal onto baking sheet to catch the cream

Bake in the oven until your potatoes have softened, the cream has reduced, and the dish turned golden brown. This usually takes 45 minutes

Enjoy!