1
general::
Ready-made, predetermined and not changeable. For example, The procedure is not quite cut and dried? there's definitely room for improvisation. This expression originally alluded to herbs for sale in a shop, as opposed to fresh, growing herbs. [c. 1900]
American Heritage Idioms
2
general::
Phrase(s): cut and dried
fixed; determined beforehand; usual and uninteresting. (Can be hyphenated before nominals.) • I find your writing quite boring. It’s too cut and dried. • The lecture was, as usual, cut and dried.
McGrawhill's American Idioms And Phrasal Verbs