Turn the oven on to 200 °C (convection if you have it).
Slice the potatoes
Peel the 490 g of potatoes and cut them into thin rounds, 2-3 mm.
Parboil the potatoes
Drop the rounds into a saucepan of salted boiling water, then lift them out with the slotted spoon as soon as a knife goes in easily but they're still firm.
Tip · Drain the potatoes well and let them dry for a moment, or the water they hold will thin out the egg mix and the gratin will stay runny.
Brown the bacon
Heat 1 tbsp of olive oil in the skillet over medium heat and brown 90 g of smoked diced bacon.
Cook the onion and garlic
Slice the onion, mince the garlic, add them to the bacon and cook over low heat until the onion is translucent.
Make the egg mix
In the bowl, mix 4 eggs, 12 cl of crème fraîche, half of the 50 g of shredded cheese, salt and pepper. Go easy on the salt: the bacon is already salty.
Build the gratin
Butter the dish with the 10 g of butter. Spread out the potatoes, then the bacon, onion and garlic, and pour the egg mix over the top.
Add the cheese
Sprinkle the rest of the shredded cheese over the top of the dish.
Bake
Bake at 200 °C until the eggs are fully set in the center and the top is golden.
Tip · Stick the tip of a knife in the center: if it comes out wet, bake 5 more min. Serve with a green salad.
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 841 kcal. 21% comes from carbs, 16% from protein and 60% from fat.
45 gCarbs
35 gProtein
56 gFat
Per serving (the dish for 2, divided by 2)
Energy
841 kcal
Protein
34.5 g
Carbs
45 g
of which sugars
3.2 g
Fat
56 g
of which saturated fat
26.5 g
Fiber
8 g
Salt
1.7 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 $2.19 a serving, adding up the average prices of the ingredients you need to buy.
≈ $4.37for 2 people
≈ $2.19a 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