Peel, wash and chop the potatoes and celery. Cover and cook in salted water for about 20 minutes.
Chop the walnuts. Wash the chives, shake dry and cut into fine rings. Mix cream cheese, chives and walnuts. Season with pepper and possibly some salt.
Wash the chicken fillets and pat them dry. Cut each fillet in, but do not cut through, to create a pocket. Pour cream cheese filling into the fillets. Season fillets with pepper and wrap 1 slice of ham around each fillet.
Possibly stuck with wooden skewers.
Heat the oil in a pan. Fry the fillets for 12-15 minutes. Wash the parsley, shake dry and chop coarsely. Heat 1 tbsp. butter. Briefly toss the parsley in it. Drain potatoes and celery.
Heat milk and 1 tablespoon butter. Add to the potatoes and mash to puree. Season to taste with salt and nutmeg.
Arrange chicken fillets and mashed potatoes and celery. Drizzle with parsley butter. Serve with lamb's lettuce. Drink tip: strong white wine, for example a Chardonnay.