Onion cut into small cubes, zucchini - circles, boiled potatoes - cubes, fillets - small cubes.
Heat olive oil in a frying pan and lightly fry the onions, then add zucchini and fry, stirring, 5 minutes. Put the potatoes and fry for another 3 minutes.
Eggs beat up with proteins and milk, add salt, pepper, mix.
Add in the skillet to the vegetables corn, fish, mix well, pour the beaten eggs. Fry over medium heat until the omelet thickens. Turn the oven on in the grill mode.
Omelet sprinkle with grated cheese and put under the grill to make the cheese melt. Ready meals can be decorated with tomatoes and fresh herbs.