There's probably an easier way, i usually do my text that needs outlining in photoshop but -
in CSP you can ...
1. Write the thing
2. Right click the text layer, "create selection"
3. Expand selection however many pixels you desire.
4. Create a layer below the text. Fill bucket the selection with the outline color you want.
You can also probably find an auto action somewhere in the asset shop that will do it for you.
IF theres an easier way to do this in CSP though i'd love to know haha, Im use to using the 'Stroke' effect in photoshop for my text.