Rub 1 tbsp of butter and a splash of oil into the beef. Then, season with cumin, honey, thyme, salt, pepper and rub the seasoning into the meat (if you wish to add any other spices do so now). Tuck the garlic cloves and onions into the beef, place the beef in the oven tray and then put it in the oven to roast for 20 minutes. After 20 minutes lower the heat to 160°C/Fan 140°C/Gas3. For rare beef roast for 5 minutes per 100g, for medium beef roast for 7 minutes per 100g and for well-done beef roast for 9 minutes per 100g. Once the beef is ready remove it from the oven and leave it to rest for 15 minutes.