Breakfast food boss offers Einstein (7)

I believe the answer is:

egghead

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'einstein' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see a link between them that I can't see?

'breakfast food boss' is the wordplay.
'breakfast food' becomes 'egg' (I've seen this before).
'boss' becomes 'head' (synonyms).
'egg'+'head'='EGGHEAD'

'offers' acts as a link.

Can you help me to learn more?

(Other definitions for egghead that I've seen before include "may take a bashing at the breakfast table" , "Boffin" , "Heed gag about slang intellectual" , "An intellectual (inf.)" , "Brainbox" .)

I've seen this clue in The Telegraph.

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