Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Sort, wash and drain the spinach. Blanch in boiling salted water for about 30 seconds. Drain, rinse cold and drain well.
Roughly chop the spinach. Mix with 2 tablespoons of oil. Season with salt and pepper.
Grate the cheese roughly. Cut avocados in half lengthwise, remove the core. Place the halves in an ovenproof dish. Spread the spinach on top. Sprinkle cheese over it. Bake in a hot oven for 15-20 minutes until the cheese is golden brown.
In the meantime, select the salad, wash and drain well. For the dressing mix orange juice, honey and mustard. Fold in 4 tablespoons of oil. Season to taste with salt and pepper.
Dab meat dry and cut into strips. Heat 2 tablespoons of oil in a frying pan. Fry the steak strips for 1-2 minutes. Deglaze with balsamic cream and soy sauce and simmer for 1-2 minutes.
Mix the salad with the dressing and arrange on plates. Place avocado halves on top. Serve steak strips with roast jus with the avocados.