Healthy food, cosy home -- something said to give us a smile (7,6)
I believe the answer is:
cottage cheese
'healthy food' is the definition.
(cottage cheese is a healthy food)
'cosy home something said to give us a smile' is the wordplay.
'cosy home' becomes 'cottage' (small or cosy dwelling).
'something said to give us a smile' becomes 'cheese' ('say cheese!' when taking a photograph).
'cottage'+'cheese'='COTTAGE CHEESE'
(Other definitions for cottage cheese that I've seen before include "Light food" , "Simple food" , "dairy produce" , "Skimmed-milk product" , "Dairy product" .)