Preheat oven to 350°F. Spray 13" x 9" baking dish with non-stick cooking spray. Place beef in large skillet; season with salt and pepper. Brown beef over medium-high heat until no longer pink, stirring to separate beef. Drain fat from skillet; set beef aside. Heat oil in same skillet over medium-high heat until hot. Add mushrooms, onions and garlic; cook and stir 2 minutes or until onion is tender. Add wine. Reduce heat to medium-low and simmer for 3 minutes. Remove from heat; stir in soup, sour cream and mustard until well combined. Return beef to skillet. Place noodles in prepared baking dish. Pour beef mixture over noodles; stir until noodles are well coated. Bake, uncovered, for 30 minutes or until heated through. Garnish with parsley if desired.