Roasted Cauliflower Soup

2 heads cauliflower
3 garlic cloves
2 shallots
2 tablespoons olive oil
3 cups chicken broth
1 cup water
1 teaspoon finely chopped fresh thyme leaves
1 bay leaf
2 cups heavy cream 

Preheat oven to 425°F. Cut cauliflower into 1-inch flowerets (about 10 cups). In a large baking pan toss cauliflower, garlic, and shallots with oil to coat and roast in middle of oven about 30 minutes, or until golden. 

In a 4-quart kettle simmer broth, water, roasted cauliflower mixture, and herbs 30 minutes, or until cauliflower is very tender. Discard bay leaf and in a blender puree soup in batches until smooth (use caution when blending hot liquids), transferring to a bowl. Return soup to kettle and stir in cream and salt and pepper to taste. Heat soup over moderate heat until just heated through. 

makes 10 cups