Sides · Swedish · Easy
Jansson's temptation
Julienne potatoes, soft onions, and anchovies are baked in cream into a creamy gratin with a crispy breadcrumb topping. The secret is to let a few spoonfuls of the anchovy brine go into the baking dish. Just as essential on the Christmas buffet as on a Friday night in November.
Machine-translated, original language: Svenska.

Method
- 1
Preheat the oven to 200 °C. Butter a baking dish of about 2 liters.
- 2
Cut the potatoes into matchstick-sized strips, by hand or with a mandoline. Do not rinse the strips; the starch helps bind the gratin.
- 3
Sauté the onions in the butter over medium heat for about 10 minutes without letting them brown.
- 4
Layer the potatoes, onions, and anchovies in the dish with potatoes at the bottom and top. Season with pepper between the layers.
- 5
Mix the cream and milk with 3–4 tablespoons of the anchovy brine and pour over; the liquid should almost reach the surface. Sprinkle with breadcrumbs and dot with a little butter.
- 6
Bake in the middle of the oven for 50–60 minutes until the potatoes are completely soft and the surface has a deep golden color. Let the gratin rest for 10 minutes before serving.