Slice the steak into strips with a sharp knife.
Put the steak in the crock pot and season with salt and pepper.
Sprinkle the diced onion on top of the steak.
Add the mushroom soup, sliced mushrooms, and water. Season with garlic, chives, Worcestershire sauce, and beef bouillon.
Whisk together the flour and white cooking wine in a small bowl. Pour over the contents of the crock pot.
Close the crock pot and cook on low for 7 hours.
Stir in the sour cream and chopped parsley. Cook for 1 more hour.
Serve over cooked egg noodles.