Combine all ingredients of olive oil, mustard and vinegar, lightly salt and pepper and whisk until smooth
In a large mixing bowl, combine celery, endive, arugula, scallions, parsley and pears.
Add a portion of the Vinaigrette and toss
Over medium high heat, saute snow peas and asparagus in olive oil until bright green, remove from heat and let cool
Add snow peas and asparagus to other salad ingredients along with remaining Vinaigrette
Toss to combine
Add fried Prosciutto, blue cheese and walnuts.
Toss and serve