Heather makes a rice pudding (5)
I believe the answer is:
erica
'heather' is the definition.
(the plant genus Erica includes heather plants)
'a rice pudding' is the wordplay.
'pudding' indicates anagramming the letters (a mixture or pudding of the letters).
'a'+'rice'='arice'
'arice' anagrammed gives 'ERICA'.
'makes' acts as a link.
(Other definitions for erica that I've seen before include "Moorland plant, girl's name" , "growing up on the moors" , "ling" , "found on the moors" , "Girl's name - I care (anag)" .)