In a small saucepan, combine the first five ingredients. Bring to a boil. Reduce heat; cover and simmer for 30 minutes. Cool slightly. Transfer to a blender; cover and process until pureed. Strain.
In a large saucepan, melt butter over medium heat. Stir in flour until blended. Gradually whisk in milk. Bring to a boil; cook and stir for 1 minute or until thickened. Gradually stir in pureed mixture. Add cream; heat through (do not boil). Garnish with parsley.