Shoulder of Lamb - cheap as chips and soo good.
Brown the shoulder off in a frying pan first making sure its well browned all over, set aside.
Chop some onions and garlic, carrot and very thinly chop some celery and anything else you have in the fridge, throw it into the frying pan and it will deglaze all the sticky burnt lamb bit from the bottom pan, fry for a few seconds until it lifts all the stuff off. Add a tablespoon of tomato puree and stur, add two tablespoons of plain flour and stur till coated then chuck it all in the slow cooker. Put the lamb on top.
Put a little red wine into the frying pan and cook briskly to cook off the booze, throw that over the lamb then add enough chicken or lamb stock to cover the veg and come up to the base of the joint. Add a bit of rosemary and a couple of bay leaves. Lid on, cook on low for 8-10 hours or high for 6-8 hours or until the meat is falling apart.
You can serve it as is but if you wanna posh it up, get the meat out and leave to rest in a warm place, pass the liquid through a sieve and taste it - season - discard the veg. If the liquid is too thin mix a little cornflour with a little water and stick it in to thicken - cook it down a little and there's your gravy.
Serve with whatever you like.
You can do exactly the same with lamb shanks but use a little more liquid so they are at least half submerged.
You can also vary this by using chopped tomatoes, chili, tumeric, curry powder etc for a morrocan type dish