Updated for Sublime Text 3
When you're using cmd+p to open files in Sublime Text, it's really annoying when you're trying to go to a .scss file and Sublime highlights the .sass-cache version of the file first. No one EVER wants to open a .sass-cache file!
Here's how you can tell Sublime to ignore the .sass-cache folder (and other folders) in your quick find results.
First, go to your Sublime Text -> Preferences -> Settings - General file, and search for "folderexcludepatterns". Copy that whole line.
Next, open your Sublime Text -> Preferences -> Settings - User file, and paste that line in there. Then, add your .sass-cache folder to the array. You have to include the defaults from your general settings or you will reset it to only ignore the sass-cache folder. So, your line should look a little like this:
"folder_exclude_patterns": [".svn", ".git", ".hg", "CVS", ".sass-cache"]
Add as many folders as you need!
Hint: Don't forget to use a comma when you're entering a new entry into the json file.