Dish from Wiltshire's left out to cook (5,4)
I believe the answer is:
irish stew
'dish' is the definition.
(Irish stew is an example)
'wiltshire's left out to cook' is the wordplay.
'left' becomes 'L' (common abbreviation).
'out' is a deletion indicator.
'to cook' is an anagram indicator.
'wiltshires' with 'l' taken away is 'witshires'.
'witshires' is an anagram of 'IRISH STEW'.
'from' acts as a link.
(Other definitions for irish stew that I've seen before include "National dish, boiled mutton, spuds and onions" , "Local dish of meat, potatoes and onions" , "food" , "Fare" , "Dish of meat, onions, potatoes etc" .)