Cook and crumble the ground beef in a large skillet over medium-high heat. Once beef is cooked, drain any grease.
Add the onion, garlic, salt and pepper to beef in skillet. Stir well. Add the gravy mix (+ water the packet calls for), sour cream, and mushroom soup. Stir mixture. Reduce heat to low and allow mixture to simmer for 15 minutes. Stir in the dried parsley.
Meanwhile, cook the egg noodles in a pot of water as directed on the package. Once cooked, drain the water and then pour the cooked noodles into the beef stroganoff. Gently stir to combine. Serve and enjoy!