Use default Craft error/exception layout in Plugin Is it possible for me to use the default Craft error-handling/exception-throwing/debug-showing template layout for my own plugin? Let's say something goes wrong and I want to show that to the user in the same style as any other "code related error" for my Plugin.

Could/how would I achieve this?
If I'm understanding your question correctly, then you get that behavior by default.

If you:

throw new Exception('Uh oh.');


Then you'll get the same error handling layout and logic that Craft uses.

You can read here for more information on how that works.