Dish left in hacienda to be cooked (9)
I believe the answer is:
enchilada
'dish' is the definition.
(enchilada is a kind of dish)
'left in hacienda to be cooked' is the wordplay.
'left' becomes 'l' (common abbreviation).
'in' indicates putting letters inside.
'to be cooked' indicates an anagram.
'hacienda' is an anagram of 'enchiada'.
'l' placed inside 'enchiada' is 'ENCHILADA'.
(Other definitions for enchilada that I've seen before include "Mexican tortilla with chilli" , "Hot food" , "spicy food" , "spicy dish" , "wrap" .)