Peel the potatoes and cut them into small cubes, about 1.5 cm.
Cook the potatoes
Put the potatoes in the saucepan, cover with cold water, add a pinch of salt and bring to a boil. Turn the heat down and cook 15 min until tender.
Sauté the mushrooms
In the skillet over medium heat, melt half the butter. Add the sliced mushrooms and sauté 5 min without browning.
Drain the potatoes
Drain the potatoes and put them back in the saucepan over low heat for 2 min to dry off any leftover water.
Mash the potatoes
Mash the potatoes with the crème fraîche, parsley, salt and pepper. Keep warm.
Tip · For a creamier mash, mash it while still hot with a little melted butter before adding the cream.
Beat the eggs
In a bowl, beat the eggs with a pinch of salt and pepper.
Cook the omelet
In the same hot skillet with the rest of the butter, pour in the beaten eggs. Cook over low heat for 3 min, lifting the edges so the omelet stays soft.
Fill the omelet
Spread the sautéed mushrooms over one half of the omelet and fold it in half with the wooden spoon.
Tip · Don't overload the omelet with mushrooms or it won't fold nicely.
Serve
Plate the omelet with the mashed potatoes on the side.
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 473 kcal. 30% comes from carbs, 17% from protein and 50% from fat.
35 gCarbs
20 gProtein
26 gFat
Per serving (the dish for 2, divided by 2)
Energy
473 kcal
Protein
20.2 g
Carbs
35.2 g
of which sugars
4 g
Fat
26.2 g
of which saturated fat
13.7 g
Fiber
6.1 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 $2.50 a serving, adding up the average prices of the ingredients you need to buy.
≈ $5.00for 2 people
≈ $2.50a 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?
Eat it fresh. An omelet is best soft, fresh out of the pan: reheated, it turns rubbery. Make it the day you eat it, it's done in 5 minutes!