Loses race to cook dish (9)
I believe the answer is:
casserole
'dish' is the definition.
(casserole is a kind of dish)
'loses race to cook' is the wordplay.
'to cook' indicates anagramming the letters.
'loses'+'race'='losesrace'
'losesrace' is an anagram of 'CASSEROLE'.
(Other definitions for casserole that I've seen before include "Meat dish" , "Make a stew" , "Cook slowly" , "meal" , "So cereals may be used for this oven-cooked covered dish" .)