Peel the cucumber, cut in half lengthways and scrape out the stones. Cut the halves into pieces about 2 cm long.
Wash, clean and cut the peppers into diamonds. Peel and finely dice the onion. Quarter the olives.
Heat the oil in a pan and fry the onion cubes until translucent. Fry the peppers for about 5 minutes while stirring. Sprinkle with curry powder and toast briefly.
Stir in the cucumber pieces and stew for about 5 minutes. Season with lemon juice, salt and pepper. Fold in the walnuts and cream cheese. Sprinkle with the olives.
As a salad: Season the vegetables with a little more lemon juice or with balsamic vinegar.