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Boil the eggs in a pan of simmering water for 6 mins, then drain and set aside in a bowl of cold water. Boil the green beans for 3 mins and drain.
Whisk together the oil, mustard and vinegar. Tip the mixed beans into a bowl and stir through the green beans, dressing, parsley and olives. Toss through the rocket.
Heat a non-stick frying pan over a high heat. Fry the steak for 2-3 mins on each side. Remove from the heat, set aside to rest for 5 mins, then slice into thin strips. Toss with the bean mix.
Pile the onto two plates. Gently peel and halve the eggs. Top the beans with the eggs, parmesan and a grinding of black pepper. Serve with the sourdough.