Method of saving old dictator one’s topping (9)
I believe the answer is:
pepperoni
'topping' is the definition.
(I've seen this before)
'method of saving old dictator one's' is the wordplay.
'method of saving' becomes 'PEP' (Personal Equity Plan).
'old dictator' becomes 'Peron' (Argentine dictator Juan Pern).
'one' becomes 'I' (Roman numeral).
'pep'+'peron'+'i'='PEPPERONI'
(Other definitions for pepperoni that I've seen before include "Seasoned beef/pork sausage" , "Butterfly-attracting shrub" , "something spicy" , "Spicy Italian sausage" , "spicy food" .)