Joe'S Homemade Mushroom Soup - cooking recipe

Ingredients

1 1/4 cups butter
1 large onion, chopped
5 pounds sliced fresh mushrooms
1 1/4 cups all-purpose flour
2 1/2 teaspoons ground black pepper
1 1/2 teaspoons salt
10 cups milk
10 cups chicken broth
1/2 cup minced fresh parsley
1 pinch ground nutmeg, or to taste
1/4 cup sour cream, or as needed

Preparation

Melt butter in a large saucepan over medium heat. Cook and stir onion and mushroom in hot butter until onion is tender, about 3 minutes. Stir flour, pepper, and salt into the onion mixture. Gradually stream milk and chicken broth into mixture while stirring to incorporate.
Bring the liquid to a boil; cook at a boil until thickened, about 2 minutes. Remove saucepan from heat. Stir parsley and nutmeg into the soup. Ladle soup into bowls and top each with a dollop of sour cream.