There is no definitive answer to this question, as the recipe may vary depending on the chef's personal preferences. However, some possible ingredients that could be used in a Jansson's Temptation recipe include potatoes, anchovies, cream, and bread crumbs.

Preheat oven to 400F. Keep potato strips incold water to prevent discoloration. Melt 2 tbsp butter in skillet and add onions; cook until soft but not brown, about 5 minutes. Pat potatoes dry. Arange layers of potatoe, onion and anchovies in a greased 1 1/2 to 2 quart baking dish. Begin and end with potatoes. Dot casserole with butter and sprinkle with pepper and bread crumbs. Pour cream around the casserole. Bake in the center of the oven until the potatoes are tender and most of the liquid is absorbed, about 45-60 minutes.
Ingredients
Directions
Preheat oven to 400F. Keep potato strips incold water to prevent discoloration. Melt 2 tbsp butter in skillet and add onions; cook until soft but not brown, about 5 minutes. Pat potatoes dry. Arange layers of potatoe, onion and anchovies in a greased 1 1/2 to 2 quart baking dish. Begin and end with potatoes. Dot casserole with butter and sprinkle with pepper and bread crumbs. Pour cream around the casserole. Bake in the center of the oven until the potatoes are tender and most of the liquid is absorbed, about 45-60 minutes.