Peel the potatoes and cut them into 1 cm cubes. Slice the onion, clean the mushrooms with a damp paper towel or cloth and slice them.
Beat the eggs
Crack the 6 eggs into the mixing bowl, add a pinch of salt and some pepper, then beat them with a fork. Set aside.
Cook the potatoes
Melt half of the butter (15 g) in the skillet over medium heat. Add the potato cubes, salt, cover and let them cook 10 min, stirring now and then, until they're tender.
Add the onion and mushrooms
Add the onion and mushrooms to the potatoes over medium-high heat. Cook uncovered 5 min, until the mushroom water has cooked off.
Tip · Don't cover the skillet and don't salt the mushrooms too early: they need to lose their water, or the omelet will be soggy.
Pour in the eggs
Turn the heat down to medium-low, add the rest of the butter (15 g) and spread the veggies out evenly. Pour the beaten eggs over the top and let them set 1 min without stirring.
Cook the omelet
Cover and let it cook 5 min over low heat, until the top is fully set with no runny bits. Loosen the edges with the spatula.
Flip and serve
Slide the omelet onto the plate, flip it back into the skillet and brown the other side 2 min. Cut in half and serve right away.
Tip · To flip without breaking it, use a plate wider than the skillet, set it on top, flip in one confident move, then slide the omelet back into the skillet.
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 534 kcal. 29% comes from carbs, 20% from protein and 48% from fat.
39 gCarbs
27 gProtein
28 gFat
Per serving (the dish for 2, divided by 2)
Energy
534 kcal
Protein
27.1 g
Carbs
38.5 g
of which sugars
6.5 g
Fat
28.2 g
of which saturated fat
13.2 g
Fiber
6.8 g
Salt
0.7 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 $2.30 a serving, adding up the average prices of the ingredients you need to buy.
≈ $4.59for 2 people
≈ $2.30a 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!