Sprinkled with breadcrumbs or grated cheese (2,6)
I believe the answer is:
au gratin
(Other definitions for au gratin that I've seen before include "Cooked, covered with breadcrumbs" , "Cooked with browned melted cheese" , "Covered with breadcrumbs or grated cheese" , "baked with a coating of breadcrumbs" , "Crumby" .)