Tortilla cooked on the shore (8)
I believe the answer is:
littoral
'on the shore' is the definition.
(I've seen this before)
'tortilla cooked' is the wordplay.
'cooked' indicates an anagram.
'tortilla' with letters rearranged gives 'LITTORAL'.
(Other definitions for littoral that I've seen before include "along the coast" , "Of or on the sea shore" , "seaside locale" , "Region lying along the shore" , "(Relating to) area along a shore" .)