Blue Cheese Pear Salad

8 cups mixed salad greens
1 cup unpeeled fresh pear slices
1 cup fresh raspberries, optional
1/2 cup (2 ounces) crumbled blue cheese
1/4 cup chopped walnuts, toasted
1/3 cup olive or vegetable oil
1/4 cup cider vinegar
1-1/2 teaspoons Dijon mustard
1 teaspoon sugar
Pepper to taste

In a large salad bowl, combine the greens, pears, raspberries if desired, blue cheese and nuts.

In a jar with a tight-fitting lid, combine the remaining ingredients; shake well. Pour over salad and toss to coat. Serve immediately. Makes 10-12 servings.