Wash the meat, dab dry and cut into strips. Peel and quarter the onion and cut into strips. Mix both with 2 tbsp. oil and 1 tsp. cumin. Heat a pan without fat. Fry the meat for 2-3 minutes.
Clean, wash and chop the zucchini. Peel and chop the garlic. Remove the meat, heat 1 tbsp. oil in a frying pan. Fry zucchini and garlic in it. Add tomatoes, bring to the boil. Season with salt and pepper, simmer for 2-3 minutes.
Wash and chop the parsley. Crumble feta. Heat meat in the sauce. Sprinkle with parsley and feta. Serve with pita bread and tzatziki.