Peel and chop the onions. Clean, wash and cut the peppers into large cubes. Clean and halve the mushrooms. Heat the oil in a roasting pan and fry the meat in portions while turning it. Add onion, mushrooms and paprika and fry for about 3 minutes, turning. Stir in tomato paste. Dust with flour and sauté briefly.
Season with salt, pepper and paprika. Deglaze with broth and bring to the boil. Cover the roast and put it in the preheated oven (electric cooker: 175 °C/ circulating air: 150 °C/ gas: level 2) and let it braise for about 1 1/2 hours. Remove the crusts and crumble the toast. Mix sour cream, crumbs and cheese. Increase oven temperature (electric oven: 225 °C/ convection oven: 200 °C/ gas: level 4), add sour cream to the goulash and bake for 15-20 minutes. Boiled potatoes taste good with it