Cook the pasta in boiling salted water according to the instructions on the packet. For the sauce puree dried tomatoes, yoghurt and wine vinegar. Season to taste with salt, pepper and sugar.
Clean, wash and cut the peppers into strips. Wash the peaches, cut the flesh into slices from the stone, then cut into slices. Heat oil in a pan and roast sunflower seeds in it while turning. Wash and halve the tomatoes. Cut mozzarella balls in half. Cut cress from the bed. Drain the olives and let them drain.
Mix the pasta, peppers, peaches, tomatoes, mozzarella, olives and sauce and serve. Sprinkle with sunflower seeds and cress.