Eggplant Stroganoff

Name: Eggplant Stroganoff
Ingredients: 12 ounces egg noodles; 12 ounces sliced cremini mushrooms; 1 cup chopped onion; 1 medium eggplant (12 oz.), cut into 1-in. cubes; About 2 tbsp. butter; About 2 tbsp. olive oil; 1 teaspoon salt; 1/2 teaspoon pepper; 3 tablespoons flour; 1 3/4 cups vegetable broth; 1 cup milk; 1/4 cup sour cream or crème fraîche; 1/4 teaspoon nutmeg; 2 tablespoons chopped flat-leaf parsley