05/23/2026
Salmon & Potato Gratin
Ingredients
450g (1 lb) Salmon fillet, skin removed, cut into thin bite-sized strips or chunks
3 large Russet or Yukon Gold potatoes, peeled and sliced very thin (about 3mm)
1 small yellow onion, finely sliced into half-moons
2 cloves garlic, minced
300ml (1 1/4 cups) heavy cream
100ml (1/4 cup) whole milk
1 cup Gruyère or sharp Cheddar cheese, freshly grated
1/2 cup Parmesan cheese, grated
1 tbsp fresh dill, finely chopped (plus extra for garnish)
2 tbsp butter (for greasing and sautéing)
Salt, black pepper, and a pinch of nutmeg
Instructions
Prep & Infuse: Preheat your oven to 190°C. Generously grease an 8x11 inch (or similar size) baking dish with 1 tbsp of butter. In a small saucepan, combine the heavy cream, milk, minced garlic, and a pinch of nutmeg. Warm over low heat just until hot (do not boil), then remove from heat and set aside.
Sauté Onions: Melt the remaining 1 tbsp of butter in a pan over medium heat and sauté the sliced onions for 5 minutes until soft and translucent.
Layer the Gratin: * Arrange one-third of the thin potato slices in an overlapping layer at the bottom of the prepared baking dish. Season lightly with salt and pepper.
Scatter half of the sautéed onions and half of the salmon pieces evenly over the potatoes. Sprinkle with half of the fresh dill.
Repeat with another layer of potatoes, the remaining onions, salmon, and dill.
Finish with a final, neat layer of overlapping potato slices on top.
Pour & Bake: Pour the warm garlic-infused cream mixture evenly over the entire dish. Cover the baking dish tightly with aluminum foil. Bake for 40 minutes.
Crisp the Cheese: Remove the foil. The potatoes should be tender when pierced with a knife. Sprinkle the grated Gruyère (or Cheddar) and Parmesan evenly over the top. Return to the oven uncovered for another 15–20 minutes until the cheese is bubbling and beautifully golden brown.
Rest & Serve: Let the gratin rest for 10 minutes out of the oven to allow the cream sauce to set before slicing. Garnish with a bit more fresh dill and serve.
Recipe Notes
Course: Main Course
Cuisine: French-Inspired / Modern Seafood
Keywords: Seafood gratin, Salmon and potatoes, Cheesy potato bake, Comfort food dinner
Pro Tip: Mandolines work best to get the potatoes uniformly thin, ensuring they cook at the exact same rate as the salmon without getting mushy.