Put the minced meat in a bowl. Peel and finely dice the onion and add to the minced meat. Add egg yolk and knead. Season with salt, pepper and paprika. Form minced meat into a steak.
Heat the oil in a steak pan. Place the steak in the pan and fry over medium heat for 10-12 minutes. Turn from time to time. Clean, wash and pat dry the chanterelles. Clean, wash and chop the spring onions and tomato.
Heat the fat in a frying pan. Sear the mushrooms in it. Add spring onions and tomato. Deglaze with red wine and stock and simmer for about 5 minutes. Season with salt and pepper. Arrange the minced steak together with the vegetables.
Serve garnished with parsley.