Lamb Shanks with red wine and rosemary

This is an extemely easy and delicious slow-cooker recipe by Joan Bishop that has been adjusted slightly.  I have cooked it a number of times and think the key is buying good quality shanks from the butcher rather than the supermarket.

Ingredients
4 lamb shanks
2 medium onions, finely sliced
2 cloves garlic, crushed
1/4 cup flour
2.5 tsp ground corriander
1/4 cup beef stock
3/4 cup red wine
2 Tbsp tomato paste
grated zest and juice of 1 orange
2 Tbsp chopped fresh rosemary

Method
1 Trim any excess fat from the shanks.  Place the onions and garlic in the cooker.  Toss the shanks in flour. Sprinkle the remaining flour over the onions and garlic in the cooker and place the shanks on top.
2 Combine the remaining ingredients in a small bowl and stir until thoroughly mixed. Spoon this over the lamb shanks.
3 Cover with lid and cook on low for 8-9 hours, or on high for 4.5 hours. Once cooked remove the shanks and thicken the gravy in the cooker. Serve with mashed potato and a green vegetable or salad.