Set the oven to 180 °C right away: it takes 10 to 15 min to heat up while you prep the veggies. Also put a saucepan of salted water (1 pinch of salt) on the stove to bring it to a boil.
Peel and cut the veggies
Peel the 400 g of potatoes and cut them into thin rounds, about 3 mm. Break the 150 g of broccoli into small florets.
Tip · Cut the rounds the same thickness, or some will be hard and others mushy when they come out of the oven.
Cook the potatoes
Drop the rounds into the salted boiling water and cook 8 min: they should stay a little firm. Lift them out with a slotted spoon or drain them, saving the hot water.
Cook the broccoli
Bring the water back to a boil if needed, drop in the florets for 5 min, then drain them well.
Sear the salmon
Cut the salmon into 2 cm cubes. Heat the 0.5 tbsp of olive oil in the skillet and sear it just 1 to 2 min per side, with salt and pepper.
Tip · Don't cook the salmon any longer, it finishes in the oven. Serve the gratin with a green salad.
Make the sauce
In the bowl, mix the 5 cl of crème fraîche, the 10 cl of milk, the pinch of nutmeg and a pinch of pepper.
Build the gratin
Spread half the potatoes in the dish, add the broccoli and salmon, then cover with the rest of the potatoes. Pour the sauce evenly over the top.
Bake the gratin
Bake at 180 °C for 15 min, until the top is golden and the sauce is simmering. The salmon should be cooked all the way through.
And there you go, it's readyCheck off every step to celebrate.
The questions you're asking
short answers, numbers you can check
How many calories in a serving?
One serving has about 502 kcal. 29% comes from carbs, 23% from protein and 44% from fat.
37 gCarbs
29 gProtein
24 gFat
Per serving (the dish for 2, divided by 2)
Energy
502 kcal
Protein
29.1 g
Carbs
36.9 g
of which sugars
5.6 g
Fat
24.4 g
of which saturated fat
8.2 g
Fiber
6.9 g
Salt
0.5 g
Worked out ingredient by ingredient with the ANSES Ciqual 2025 table, never written by an AI. It's an estimate: veggie sizes and brands make the numbers vary.
How much does it cost?
About $2.16 a serving, adding up the average prices of the ingredients you need to buy.
≈ $4.33for 2 people
≈ $2.16a serving
Pantry salt, oil and spices aren't counted. Your store and your brands will move the total, but the ballpark is right.
How long does it keep?
1 day in the fridge, in a closed container, once cooled within two hours. After that, into the freezer it goes.
1 dayin the fridge
Yesin the freezer, thaw it in the fridge the day before