Dish of meat and vegetables cooked slowly (4)
I believe the answer is:
stew
'dish of meat and vegetables cooked slowly' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for stew that I've seen before include "Cook by simmering slowly" , "Meat and veg dish" , "anxious state" , "Slow-cooked meat dish; state of agitation" , "Casserole" .)