Bring 200 ml water and 1/2 teaspoon salt to the boil in a covered pot. Remove from the heat, stir in the couscous and let it swell covered for about 5 minutes. Loosen up with a fork and let cool down.
Peel the carrots and cut into small cubes. Clean and quarter the mushrooms. Heat oil in a pan, fry carrots and mushrooms for 2-3 minutes, season with salt and pepper and add the couscous.
Mix yoghurt with lemon juice, season with salt and pepper. Wash parsley, shake dry and chop finely, except for a little bit for garnishing. Add parsley to the couscous
Crumble the cheese over the couscous and garnish with the remaining parsley.