For the steak with herb mushrooms, first mix the Monini Classico olive oil, garlic, lemon zest, salt and pepper. Brush the herb mushrooms with it. Sear them in a frying pan and set aside.
Sear the meat in a grill pan with very little oil and the rosemary sprigs on both sides for 1 /2 minutes each (for medium). Then let rest for about 3-4 minutes. Sprinkle with sea salt and pepper before serving.
Arrange steak with herb mushrooms and serve.