- Heat olive oil in a 4 quart saucepan or soup pot. Add onion and celery and saute until soft (about 5 minutes).
- Add water, potatoes, corn, sugar, salt, and pepper. Cover and simmer until potatoes are tender, about 25 minutes.
- Whisk flour into LACTAID® Fat Free Milk; stir into soup and cook until soup gets a creamy and thickened consistency, about 12 minutes. Serve warm.