Fry the diced mutton in a heavy based pan in a little oil over
a high heat until rich & golden then reserve.
Next sear the Merguez sausage on all sides in the same pan
until just cooked then set to one side, when cool slice each
sausage into 3 wedges.
Sweat the onions & garlic in a deep casserole dish with the
remaining oil until soft & translucent.
Add the spices, chilli & tomato to the onions & cook
out for 5 minutes.
Add the stock and then bring to a simmer.
Thicken by whisking the corn flour mix into the simmering
sauce.
Add the mutton to the pot, cover & cook for 2 hours in a
preheated oven 140oc fan assisted or 150oc without a fan.
Next add the potatoes, butter beans & sliced Merguez
sausage then place back in the oven covered & cook for 45
minutes until both the mutton & potatoes are tender.
Carefully remove from the oven and then add the basil into the
hotpot just before serving.