Season the cod with salt and pepper to taste, then roll in flour.
Fry the fish in olive or vegetable oil until golden brown and put in a baking dish covered with parchment.
Remove the skin from the tomatoes and chop, chop the mushrooms, and pass the garlic through a press.
Fry the vegetables in a pan where the fish was cooked for several minutes, at the end, salt and pepper to taste. Transfer vegetables to fish.
Cook cod under vegetables at 200 degrees for 10-15 minutes. Garnish with fresh basil before serving.