This soup is so good and healthy!
In a stock pot, bring chicken broth, onions, carrots, garlic, and celery to a boil. Cover and simmer 5 minutes.
Add broccoli and pepper and cook, covered, 10 more minutes.
Add sour cream and puree soup with an immersion blender.
Adjust black pepper to taste and heat through over medium heat, stir in the cheddar cheese and serve