Simple supper: about time a piece got cooked (7,3)
I believe the answer is:
cottage pie
'simple supper' is the definition.
The definition suggests a singular noun which matches the answer.
'time a piece got cooked' is the wordplay.
'time' becomes 't'.
'cooked' indicates an anagram.
't'+'a'+'piece'+'got'='tapiecegot'
'tapiecegot' with letters rearranged gives 'COTTAGE PIE'.
'about' is the link.
Can you help me to learn more?
(Other definitions for cottage pie that I've seen before include "Mince and mashed potato dish" , "traditional dish" , "Potato-topped dish" , "homely dish" , "Dish of minced meat topped with mashed potato" .)