Toss together salad ingredients green apple, grapes, and arugula with Stilton Vinaigrette, adding dressing gradually to achieve desired degree of coating. Pile high on service plate or in large salad bowl. Garnish with chopped pecans and Stilton sprinkled across top of salad. For the Stilton Vinaigrette: In small bowl, whisk together lemon juice, vinegar, salt, pepper, Dijon mustard, cayenne, and sugar. Gradually whisk in oil. Mix in Stilton. Place in clean container, label, date and store refrigerated. Makes 3½ cups.