Preheat your oven to gas mark 4/180c fan/200c/350F
Place the Iceland frozen sausages (or other defrosted sausages) in to an oven proof casserole dish, spray with cooking oil spray and pop in the oven for 15 minutes.
Now add the remaining ingredients and cook on the hob until a simmering point and cover with a lid.
And finally, to cook the casserole, you can continue simmering away for an hour on the hob, or place back in the oven for 1 hour.