Asparagus Leek Soup - Diet.com

Ingredients

• 1 1/2 lbs chopped fresh asparagus, washed and tough ends removed
• Nonfat cooking spray
• 1/2 cup onion, chopped
• 1 cup leeks (white part only), washed and chopped
• 1/2 cup celery, chopped
• 1 small potato, peeled and cubed
• 3 1/2 cups low-sodium chicken broth
• 1/2 cup nonfat sour cream
• Salt and pepper to taste (added salt not included in nutrition facts)