In a stockpot, heat oil over medium heat until hot. Add celery, onion, garlic and bell pepper and cook until the vegetables are soft, 8 to 10 minutes.
Add corn, potatoes, vegetable broth, black pepper, cayenne (if using), paprika and thyme. Bring to a boil; reduce heat to medium and cook, covered, about 10 minutes, or until potatoes are tender.
In a deep bowl, whisk 1 cup of the milk with the flour until smooth. Gradually add milk and flour mixture to soup.
Add remaining 2 1/2 cups milk and cook, stirring constantly, until mixture comes to a boil and thickens slightly. Serve garnished with parsley.
In a stockpot, heat oil over medium heat until hot. Add celery, onion, garlic and bell pepper and cook until the vegetables are soft, 8 to 10 minutes.
Add corn, potatoes, vegetable broth, black pepper, cayenne (if using), paprika and thyme. Bring to a boil; reduce heat to medium and cook, covered, about 10 minutes, or until potatoes are tender.
In a deep bowl, whisk 1 cup of the milk with the flour until smooth. Gradually add milk and flour mixture to soup.
Add remaining 2 1/2 cups milk and cook, stirring constantly, until mixture comes to a boil and thickens slightly. Serve garnished with parsley.
Thank you!