PREPARATION:
- Melt butter in large saucepan over medium heat. Add leek; cook and stir 10 minutes or until tender.
- Add milk, bouillon granules and pepper. Bring to a boil over medium-high heat. Add fennel and potatoes. Reduce heat to low. Cover and simmer 15 to 20 minutes or until fennel is very tender.
- Combine half-and-half, sherry and flour in small bowl; whisk until smooth.
- Stir flour mixture into fennel mixture. Cook over medium heat until mixture thickens, stirring constantly. Do not boil.
- Ladle soup into soup bowls; sprinkle each serving evenly with blue cheese and walnuts.
