Clean and wash the leek and cut into thin rings. Peel the carrots, cut them lengthwise in half and slice them. Clean, clean and halve the mushrooms.
Heat butter in a pot. Fry the minced meat until crumbly. Add leek and carrots and sauté for 3-4 minutes, turning. Add wine and vegetable stock, bring to the boil and simmer for about 10 minutes.
Stir the cheese into the soup and season with salt and pepper. Wash parsley, shake dry, pluck leaves from the stalks and chop coarsely. Serve the soup and sprinkle with parsley.