Peel, wash and quarter the potatoes. Cook in boiling salted water for about 20 minutes. Clean, wash and cut broccoli into small florets. Wash the meat, dab dry and cut into narrow strips. Peel onions, cut into rings and sprinkle with flour. Heat 1 tablespoon of oil in a pan.
Brown the meat in it in portions and take it out. Add 2 tablespoons of oil to the frying fat. Fry the onions in it until golden brown and take them out. Put the meat and 3/4 of the onions back into the pan. Deglaze with 3/8 litres of water and cream and bring to the boil. Let simmer for about 5 minutes. Cook broccoli in salted water for about 5 minutes. Drain the potatoes. Add milk and fat and mash to puree. Stir mustard into the sauce and season with salt, pepper and thyme. Drain broccoli. Arrange the shredded potatoes with mashed potatoes and broccoli on plates.
Cook broccoli in salted water for about 5 minutes. Drain the potatoes. Add milk and fat and mash to puree. Stir mustard into the sauce and season with salt, pepper and thyme. Drain broccoli. Arrange the shredded potatoes with mashed potatoes and broccoli on plates. Spread the remaining onion rings on top. Sprinkle with parsley