Roast the peppers on the bbq then remove skins once cooled and chop into quarters In a pot, in some butter or oil, fry the onions, once soft, add the tomatoes, stock sugar and basil. Season to taste. Simmer for 20 minutes, add the roasted peppers and simmer for 10 more minutes, I added garlic with the peppers because I forgot to put them with the onion. Once simmered use the immersion blender to make smooth, add 1/2 cup cream or hummus or other as like to taste.