I got this idea from Tom Kerridge, I would never have thought to marinade in Black Treacle but it was absolutely delicious.

1. Season Rump Steaks with salt and pepper put into dish and cover with black treacle, cover with cling film and marinade in refrigerator for 24 hrs or overnight.
2. Flash fry steaks on both sides in frying pan with little oil for about 4 mins each side.
3. Transfer to cooking tray and put in oven on Multilevel at 60 deg for an hour. (will be cooked rare)
4. If well done cook for about 15-20 mins at 210 deg and then let rest for 5 mins.

So tasty!