Market Goumet isn't a restaurant but has soups of the day that are great... 1800A Abbot Kinney in Venice... You can grab some good breads and cheeses to make a great lunch to go...
Nook Bistro in W.L.A. always has very good soups as does Joe's in Venice. If you're in that French bistro mood, Chez Mimi in Santa Monica has vichyssoise, onion, gazpacho (tomato and cucumber) and a tomato tarragon that are very good.