Heres one from allrecipes that sounds good:
25g (1 oz) butter
4 red peppers, chopped
1 onion, chopped
4 cloves garlic, minced
750ml chicken stock
100ml double cream
salt and freshly ground black pepper to taste
Melt the butter in a large saucepan over medium heat. Place the red peppers, onion and garlic in the saucepan and sauté for 5 to 10 minutes, or until tender.
Pour in the chicken stock, stirring well, then reduce heat to low and simmer for 30 minutes. Transfer to a blender and purée until smooth.
Run the soup through a sieve and return the liquid to the saucepan over medium low heat. Stir in the double cream and salt and pepper to taste, and allow to heat through, about 5 to 10 minutes.