1. Place walnuts in a single layer in a shallow pan. Bake at 350° for 8 to 10 minutes or until toasted, stirring after 5 minutes.
2. Arrange greens on 6 salad plates. Sprinkle each with blue cheese, tomatoes, cranberries, and toasted walnuts. Drizzle each with 4 tsp. vinaigrette.