Prepare rice in boiling salted water according to package instructions. Peel onions, finely dice 1/2 onion. Cut remaining onions into half rings. Clean, wash and slice the mushrooms.
Knead the minced meat, diced onion, egg, some salt, pepper and paprika and form 4 flat minced steaks. Heat 1-2 tablespoons of oil in a grill pan and fry the minced steaks for 5-6 minutes while turning.
Heat 1 tablespoon of oil in a coated frying pan. Fry the onions until golden brown while turning. Place the onions on the steaks and keep warm. Put 1 tablespoon of oil in the hot pan and fry the mushrooms briefly.
Pour on 250 ml of water and stir in the hunting sauce powder. Let the sauce simmer for about 2 minutes, stirring from time to time. Wash parsley, shake dry and cut into fine strips, except for a little bit for garnishing.
Season hunter's sauce with salt and pepper. Arrange minced steaks with roasted onions, hunter's sauce and rice on plates. Sprinkle with parsley and garnish.