Cooking Directions:
1. Prepare noodles according to package directions; drain.
2. In a large saucepan, combine sour cream, half and half and Worcestershire sauce. Stir over low heat until smooth and just warm.
3. Add onions, parsley, salt, garlic powder and pepper.
4. Stir in noodles.
5. Serve topped with Parmesan cheese.