Seal the lamb in a frying pan all over.
Pearce the skin with a knife in eight places and slide in the halved garlic cloves.
Place the butternut squash and onion in base of slow cooker.
Place the lamb on top.
Arrange the carrot, parsnip and crushed garlic around the lamb.
Sprinkle on the rosemary and seasoning.
Pour the wine and stock into the slow cooker.
Cook on low for 6 hours or until meat is cooked and tender.
Remove the lamb and pull apart with 2 forks.
Strain off the cooking liquor and use to make your gravy, you could add some red currant jelly for extra lushness!
Serve with the slow cooked vegetables, roast potatoes and a green vegetable of your choice.