The most common and most likely answer to this crossword clue is the 11 letter word BOILERPLATE
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More clues leading to the result BOILERPLATE
Buddy explains!

The straight part
We know that "cliché-ridden material" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cliché-ridden material = boilerplate.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BOILERPLATE mean?
BOILERPLATE noun- A sheet of copper or steel used in the construction of a boiler.
- The rating plate or nameplate required to be affixed to a boiler by the (UK) Boiler Explosions Act (1882).
- A plate attached to industrial machinery, identifying information such as manufacturer, model number, serial number, and power requirements.
- Syndicated material.
- Standard text or program code used routinely and added with a text editor or word processor; text of a legal or official nature added to documents or labels.
- Hard, icy snow which may be dangerous to ski on.
- To store (standard text) so that it can easily be retrieved for reuse.
- Describing text or other material of a standard or routine nature.
- Used to refer to a non-functional spacecraft used to test configuration and procedures.