1. Puree everything but the bread in a blender until very smooth, 2 to 3 minutes stopping to scrape down sides once or twice. Cover tightly with the blender lid and refrigerate for at least 2 hours or up to 6 hours.
2. Puree again just before serving, adding a little cold water if necessary to thin the soup. Serve with the Panera Bread Tomato Basil toast and garnish with cilantro.
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