Spud in bowl with mixed oat (6)
I believe the answer is:
potato
'spud' is the definition.
(synonyms)
'bowl with mixed oat' is the wordplay.
'bowl' becomes 'pot' (I've seen this before).
'with' is a charade indicator (letters next to each other).
'mixed' indicates an anagram.
'oat' with letters rearranged gives 'ato'.
'pot'+'ato'='POTATO'
'in' acts as a link.
(Other definitions for potato that I've seen before include "It's often baked" , "The humble spud" , "Starchy tuber" , "Tuberous vegetable" , "Tuber, popular in Ireland" .)