Place all the ingredients into a large casserole dish (with a lid).
Pour in the stock and bring to the boil on the hob before putting in a medium oven (1890/No. ) for approx. 5 hrs, until the chicken is cooked and the vegetables soft.
Remove the whole chicken and remove the meat from the carcass. You can add the wing meat to the vegetables in the casserole.
Liquidize the contents of the casserole (vegetables/stock/wing meat) to a thick, smooth sauce. You may need to do this in batches.
Replace the chicken meat into the sauce and serve with streamed green vegetables. If you are aiming to lose some weight, then just eat the casserole and steamed veg. - if not, this casserole is scrumptious with either mash potato or sweet potato mash! Try mashing your potatoes with olive oil instead of butter.