You may try getting from the web, data recovery programs that might be able to recover this list but with no guarantees. You must stop using your MBP NOW for any chance of recovery to lessen the chances that the data has been overwritten.
You also may engage a data recover service that may or may not be able to recover the data but that is very expensive starting at hundreds of dollars and on up. That also with no guarantee of success.
Best of luck.
I read some of the discussions and someone said I could do something like this:
You want the "Bookmarks.plist" file in the Safari folder.
For Lion: To find the Home folder in OS X Lion, open the Finder, hold the Option key, and choose Go > Library
If anyone is familar with this recovery method, please kindly advise and help me out.
Even though you don't have Time Machine set up- as long as you have the Time Machine on, it is making and storing local snap shots of your system.
Recover from there.