Fall down, seeing dessert (7)

I believe the answer is:

crumble

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This could be a double definition.

'fall' is the first definition.
(thesaurus)

'down seeing dessert' is the second definition.
'crumble' can be an answer for 'dessert'. I am unsure of the 'down seeing' bit.

Can you help me to learn more?

(Other definitions for crumble that I've seen before include "Fall to pieces - dessert" , "Break up - pudding" , "Gradually disintegrate" , "Break down, fall apart" , "Type of pudding - disintegrate" .)

I've seen this clue in The Daily Express.

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