Cook the egg noodles in salted water according to package directions.
Heat 1 tablespoon of butter in a large pan over medium high heat.
Place the beef in the pan and cook for 4-5 minutes, breaking up the meat into small pieces with a spoon or spatula. Season with 1 teaspon of salt and 1/4 teaspoon of pepper.
After the meat is cooked through, remove it from the pan and place on a plate. Cover with foil to keep warm.
If there is excess grease in the pan from the beef, drain it off.
Melt the remaining 2 tablespoons of butter in the pan. Add the onions and mushrooms. Cook for 5-7 minutes, stirring occasionally, or until tender and browned. Season the vegetables with 1/4 teaspoon salt.
Add the garlic and cook for 30 seconds.
Add the flour to the pan, and stir to coat the vegetables. Cook for 1 minute, while continuing to stir.
Add the beef broth, paprika, Italian seasoning and Worcestershire sauce to the pan, stirring well. Cook for 3-4 minutes or until sauce is thickened.
Stir in the sour cream. Add the ground beef back to the pan and cook for 2-3 minutes until the meat is heated through.
Top the stroganoff with parsley, then serve with the egg noodles.