Peel the potatoes and zucchini. Cut them into thin rounds (about 3 mm thick).
Cook the vegetables
In the nonstick skillet, heat the olive oil over medium heat. Add the potato and zucchini rounds and salt lightly. Cook for 5 min, stirring now and then.
Tip · To keep the vegetables from sticking, don't crowd the skillet. Cook them in a single layer if you can.
Make the sauce
In the saucepan, mix the crème fraîche, milk, nutmeg, salt and pepper. Warm it over low heat without letting it boil.
Layer the dish
In the gratin dish, alternate a layer of potatoes and zucchini with a little of the sauce. Repeat until you've used up all the vegetables and sauce.
Add the cheese
Sprinkle the grated cheese over the top of the gratin. Save half of it for later.
Bake
Bake the dish at 180 °C for 20 min. Halfway through, add the rest of the grated cheese on top.
Tip · Check doneness with the tip of a knife: it should slide easily into the potatoes.
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 436 kcal. 27% comes from carbs, 12% from protein and 58% from fat.
29 gCarbs
13 gProtein
28 gFat
Per serving (the dish for 2, divided by 2)
Energy
436 kcal
Protein
13.3 g
Carbs
29 g
of which sugars
5.7 g
Fat
28.3 g
of which saturated fat
15.2 g
Fiber
5.6 g
Salt
0.6 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 $1.48 a serving, adding up the average prices of the ingredients you need to buy.
≈ $2.96for 2 people
≈ $1.48a 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?
2 days in the fridge, in a closed container, once cooled within two hours. And it freezes really well.
2 daysin the fridge
Very wellin the freezer, thaw it in the fridge the day before