Because there’s a healthy amount of butter and cream in this pea soup, the finished dish should be thick and smooth. Plus, when the cooked peas are puréed in the blender, they will break down and help to thicken the soup even more. If you feel that your soup is too thick, you can add some more chicken broth to thin it out. If you feel it is too thin, you can try to add some more heavy cream and allow it to simmer.