Peel potatoes and cut them into small cubes, halve zucchini lengthwise and cut into thin slices.
In a saucepan, heat 1 tablespoon oil and fry the potatoes. Add zucchini and season with salt, pepper, rosemary and paprika. Pour in 100 ml of soup, simmer the vegetables covered over low heat until al dente, about 35 minutes.
Cut mushrooms into slices, chop onion finely. Pound meat. In a pan heat 1 tbsp. oil and fry the meat briefly on both sides. Season with salt and pepper, remove and keep warm.
Sauté onion until translucent, stir in mushrooms and sauté all. Pour in 100 ml of soup. Mix the starch with some water and pour in also. Boil up and simmer 5 minutes over low heat. Season to taste sauce with salt and pepper. Cut meat into strips and serve with the sauce and vegetables.