Writer takes the last of the Parmesan on top of egg pasta (5)
I believe the answer is:
penne
'pasta' is the definition.
(penne is a type of pasta)
'writer takes the last of the parmesan on top of egg' is the wordplay.
'writer' becomes 'pen' (something which writes).
'takes' is a charade indicator (letters next to each other).
'the last of' suggests the final letters.
'on top of' indicates taking the first letters.
The final letter of 'parmesan' is 'n'.
The initial letter of 'egg' is 'e'.
'pen'+'n'+'e'='PENNE'
(Other definitions for penne that I've seen before include "Form of pasta" , "Wide tube-shaped pasta" , "Pasta in thick tubes" , "Type of pasta" , "2 [PASTA]" .)