How to open files from Finder into existing instance of Sublime Text 2?

I would like to be able to go into Finder and open files into an existing instance of Sublime Text 2, which has a side menu with all open files. However, when I hit Open With -> Sublime Text 2.app, it opens a whole new instance of Sublime, which is not what I want. I can certainly accomplish grouping of my documents in a single instance if I open them within the application but that requires more steps and time, i.e. is not always as convenient as opening them from Finder.

Solution 1:

As shown in this answer on SuperUser, you can set this behaviour by changing the open_files_in_new_window setting in Sublime Text to false. (Note that it's recommended that you override the setting in the Settings - User file rather than changing it in Settings - Default.)