Yield: 8 servings
Cook noodles and drain. Add sour cream, milk and mushroom soup to noodles, stirring to combine; cover and keep warm. In a large skillet over medium high heat, brown beef until done; drain. Add gravy mix, cream cheese and mushrooms to meat, stirring to blend. Combine noodle and beef mixtures, stirring to blend. Pour into 4 qt. casserole. Bake at 350 degrees, uncovered, only until sauce thickens.
Please note that some ingredients and brands may not be available in every store.