Put rice in boiling salted water. Let it swell for about 20 minutes at medium heat. Meanwhile mix minced meat, breadcrumbs and egg. Season to taste with salt, cayenne pepper and onion spice. Form small meatballs from it.
Clean, wash and dry the mushrooms. Heat the oil in a high frying pan. Fry the meatballs for about 5 minutes, turning them over. Add the mushrooms and fry for another 5 minutes. Wash, quarter and seed the tomatoes. Cut the fruit flesh into pieces. Deglaze balls and mushrooms with 800 ml water, bring to the boil. Stir in onion soup powder. Add tomatoes. Let simmer for about 10 minutes.
Deglaze balls and mushrooms with 800 ml water, bring to the boil. Stir in onion soup powder. Add tomatoes. Let simmer for about 10 minutes. Refine with cream. Season again with salt and cayenne pepper. Serve sprinkled with parsley and garnished