Preheat oven (electric cooker: 160 °C/circulating air: 140 °C/gas: see manufacturer). Wash chops, dab dry, turn in flour. Coat all around with mustard. Fry in hot oil in an ovenproof pan for about 2 minutes on each side. Bake in the oven for about 15 minutes more.
Cook the frozen beans in salted water for 8-10 minutes. Peel and finely chop the onion. Fry in 2 tablespoons of butter. Drain the beans and toss them in. Season with pepper.
Boil 700 ml water, 1 teaspoon salt and 1 tablespoon butter. Remove from heat and add milk. Stir in puree flakes and let it swell for a short time. Serve with chops and beans. Sprinkle with fried onions.