the G.I. Diet - Orange-Scented Broccoli and Leek Soup

Ingredients

• 2 tbsp olive oil
• 4 cups thinly sliced leeks (white and light-green parts only)
• 6 cups chicken stock or vegetable-based chicken stock (low-fat, low-sodium)
• 6 cups broccoli florets, cut to small pieces
• 1 cup large-flake oats
• Zest of 1 medium orange
• ½ tsp hot red pepper flakes
• ½ tsp salt
• ½ tsp pepper
• 2 cups skim milk
• ½ cup shredded low-fat cheddar cheese (optional)