Preheat a griddle pan.
Skewer beef evenly between rosemary sprigs, drizzle with a little olive oil then season with sea salt and black pepper.
Place on griddle pan and cook for a minute on either side, then splash with balsamic.
Meanwhile heat remaining oil in a pan, once hot add the garlic and chilli flakes, cook for 30 seconds then add the tomatoes and puree. Cook for 3 minutes.
Serve with potatoes, rocket, sautéed tomatoes and shaved parmesan, drizzle with olive oil.
» Metric Converter