The most common and most likely answer to this crossword clue is the 8 letter word CODDLING
I've seen this crossword clue in The Times
C
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More clues leading to the result CODDLING
Buddy explains!

The straight part
We know that "Cooking" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cooking = coddling.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 CODDLING mean?
CODDLING verb- To treat gently or with great care.
- To cook slowly in hot water that is below the boiling point.
- To exercise excessive or damaging authority in an attempt to protect. To overprotect.
- The act of one who coddles or pampers.
- A young small cod.
- A hake (cod-related food fish), notably from the genus Urophycis.
- A small, immature apple
- Any of various greenish, elongated English apple varieties, used for cooking