First, the fish will marinate. For this it is necessary to clean while it's still not fully thawed: it is easier to clean), to cut into fillets with skin, cut into portions. Sprinkle with salt and pepper. Peel a garlic, squeeze through press and sprinkle the fish. Pour freshly squeezed lemon juice and butter. Put under the press in the fridge for 2 hours. Onion cut into half rings and fry. Mushrooms and tomatoes finely chop, cheese grate on a coarse grater. The fish lay on a greased baking sheet. Then the fish put onions, mushrooms, tomatoes. This photo shows different pieces step by step.

From top to pour the fish with mayonnaise. I added mayonnaise 2 tbsp sour cream and finely chopped greens.

Put baking tray in preheated oven and bake for 30 minutes.

Then the pan is removed, fish sprinkle grated cheese and put back in the oven. Bake for 10 more minutes, until cheese is browned.

Serve with potatoes and garnish with herbs. It's incredibly tasty, juicy... Join me. Bon appetit!!!