Stilton Cauliflower Soup

Preparation

1. Step 1

   Cook onion, celery, and cauliflower in butter in a 3 1/2- to 4-quart heavy saucepan over moderate heat, stirring occasionally, until onion and celery are softened, 8 to 10 minutes. Add broth and 1 cup milk and simmer, covered, until cauliflower is very tender, about 25 minutes.

   Step 2

   Purée cauliflower mixture in 2 batches in a blender until very smooth (use caution when blending hot liquids), then return to cleaned saucepan and bring to a simmer. Whisk together cornstarch and remaining 2 tablespoons milk in a small bowl until cornstarch is dissolved, then add to soup and simmer, whisking, until soup is slightly thickened, 1 to 2 minutes. Add Stilton, cream, pepper, and salt and cook over low heat, whisking, until Stilton is melted and soup is smooth, about 1 minute