In a roasting pan place butternut and drizzle with olive oil.
Roast in a preheated 180°C oven for 40-45 minutes or until soft.
In a pan melt the margarine and fry the onions and garlic until just soft.
Add the roasted butternut, KNORR Chicken a'la King Dry Cook-in-Sauce packet contents and water.
Bring to the boil, cook for about 5-10 minutes to allow flavours to develop and soup to thicken.
Add the zest, chilli and cream.
Remove from heat and blend with a stick blender or food processor until smooth.
Add salt (to taste).
Serve hot garnished with crumbled feta cheese.