Prep1 hr 25 mins
- In a large saucepan, saute the leeks in butter.
- Add broth, asparagus, potatoes, salt and pepper.
- Bring to a boil.
- Reduce heat; cover and simmer for 10 minutes or until vegetables are tender.
- In a blender, process soup in batches until smooth; return to pan.
- Add milk; cook over low heat until heated though.
- Sprinkle with parsley.