Oven for cooking oats? (4)
I believe the answer is:
oast
'oven' is the definition.
(oast is a kind of oven)
'cooking oats?' is the wordplay.
'cooking' indicates an anagram.
'oats' anagrammed gives 'OAST'.
'for' acts as a link.
(Other definitions for oast that I've seen before include "Hop-kiln" , "Hop drying kiln" , "Cooker" , "Where to cook" , "Oven for hops" .)