Creamy Spinach Mushroom Soup

Directions

1. In a large saucepan, heat butter over medium-high heat. Add mushrooms, celery and onion; cook and stir until tender, 4-6 minutes. Stir in flour until blended; cook and stir until lightly browned, 2-3 minutes. Gradually whisk in stock. Bring to a boil. Reduce heat; simmer, covered, 10 minutes.
2. Add spinach; cook and stir until wilted, 2-4 minutes. Gradually stir in cream, sour cream, salt and pepper; heat through (do not allow to boil). Sprinkle with parsley.