Cook and drain noodles as directed on package, omitting salt. Place in serving bowl; cover to keep warm.
Meanwhile, heat 12-inch nonstick skillet over medium-high heat. Add beef; cook 3 to 4 minutes on each side or until desired doneness. Remove from heat. Place beef on serving platter; cover to keep warm.
Wipe skillet clean with paper towels. Heat skillet again over medium-high heat. Add mushrooms; cook 10 minutes, stirring occasionally.
Meanwhile, in medium bowl, mix soup, wine, cornstarch, tomato paste and oregano.
Add soup mixture to mushrooms; cook, stirring frequently, until bubbly and thickened. Remove from heat. Stir in parsley, and season to taste with pepper. Spoon mushroom mixture over beef; serve with noodles.