To make the chicken cutlet with mushrooms, shred the chicken breast, clean the oyster mushrooms and cut them into even, not too large pieces, and cut the ham into strips.
Wash the zucchino and the carrot and cut the julienne. Season the meat with salt and pepper and fry it in a large pan in hot oil, possibly in several courses, it should fry and not boil. Remove and keep warm.
In the same pan, fry the ham briefly in 1 tablespoon of butter and add to the meat. Then add the onions and carrots and the zucchini strips and mushrooms, also fry in butter. Deglaze with white wine. Add the creme fraiche and pour some soup, season with salt and little pepper.
Add the meat and ham to the sauce and steam very briefly, the meat should be well-done but not dry, and the vegetables not too soft.
Shortly before serving, stir in the chopped parsley and possibly season the chicken strips with mushrooms again!