Cream of Broccoli Soup

This recipe is from Aunt Carol. She made it for Thanksgiving one year when she hosted the Knable Klan at her apartment and it's been one of our favorites ever since!

1 1/2 stick of butter
2 T oil
2 cups diced onion
4 cups chopped fresh broccoli
1/2 cup flour
4 cups lightly salted chicken broth
1 qt. Half & Half
1 t. ground nutmeg
1/2 t. ground white peper
3 cups grated white cheddar cheese

Melt butter with oil in a dutch oven using medium heat. Add onions and cook until tender. Add broccoli and mix well.  Sprinkle in flour and cook, stirring frequently for 3 minutes. Blend in broth gradually and bring to a simmer; cook 10 minutes. Stir in Half & Half, pepper and nutmeg and simmer for 5 minutes. Add cheese and turn off heat. Stir well before serving.