It's crazy to scoff unfinished rolls, as many here are (6)
I believe the answer is:
sitcom
'scoff unfinished rolls as many here are' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'it's crazy to' is the wordplay.
'crazy' indicates anagramming the letters.
'to' becomes 'com' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'its' anagrammed gives 'sit'.
'sit'+'com'='SITCOM'
Can you help me to learn more?
(Other definitions for sitcom that I've seen before include "Shortened form of situation comedy" , "Bread, perhaps" , "'Humorous drama based on situations, in short (6)'" , "Amusing TV series (abbr.)" , "this could be fun" .)