Bring a large pot of lightly salted water to a boil. Add egg noodles and cook for 8 to 10 minutes or until al dente; drain.
In a skillet over medium heat, brown the ground beef until no pink shows, about 5 minutes; drain fat.
Mix brown gravy, cream cheese, and mushrooms with hamburger, stirring until cream cheese melts. Add milk, sour cream, and mushroom soup to cooked pasta. Blend hamburger mixture with pasta.
