In a large saucepan over medium heat, melt butter. Cook onions and celery in butter 3 minutes. Whisk in flour and cook 6 minutes more, until light brown. Whisk in broth and simmer 10 minutes.
Stir in creamed corn, corn, carrot, half-and-half, milk, nutmeg, pepper and salt. Simmer over low heat 10 minutes more.
