1. Cook onion in oil until very soft and tender and slightly browned. Roughly 10 minutes.
2. Add garlic and bell pepper, and cook for about 30 seconds.
3. Set aside to let cool.
4. Combine room temperature cream cheese, sour cream, mayo, salt, and Worcestershire sauce in food processer.
5. Pulse until smooth, scraping down sides a few times and adding water as needed until desired consistency is reached.
6. Add onion mixture and pulse until everything is incorporated.
7. Taste test, and add salt and/or Worcestershire sauce as needed.
8. Refrigerate in a lidded container.

Enjoy!