Prompt to hold pack out, showing sweet treat (7)
I believe the answer is:
cupcake
'sweet treat' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'prompt to hold pack out' is the wordplay.
'prompt' becomes 'cue' (cue can mean a prompt or signal).
'to hold' is an insertion indicator.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'pack' anagrammed gives 'pcak'.
'cue' placed around 'pcak' is 'CUPCAKE'.
'showing' is the link.
Can you help me to learn more?
(Other definitions for cupcake that I've seen before include "Iced fancy" , "Small baked item" , "Iced bun" , "Small iced delicacy" .)