Paste: fix a large plateful, last of spaghetti (8)
I believe the answer is:
rigatoni
'paste' is the definition.
(rigatoni is a kind of paste)
'fix a large plateful last of spaghetti' is the wordplay.
'fix' becomes 'rig' (rigging is a kind of fixing).
'large plateful' becomes 'ton' (I can't justify this - if you can you should believe this answer much more).
'last of' suggests the final letters.
The final letter of 'spaghetti' is 'i'.
'rig'+'a'+'ton'+'i'='RIGATONI'
Can you help me to learn more?
(Other definitions for rigatoni that I've seen before include "Form of pasta" , "Type of pasta" , "Short fluted tubes of pasta" , "Pasta - I got rain (anag)" , "Pasta dish" .)