Fiddle with stuffing for ravioli noodles (6)
I believe the answer is:
violin
'fiddle' is the definition.
('violin' can be a synonym of 'fiddle')
'stuffing for ravioli noodles' is the wordplay.
'stuffing for' says the answer is hidden in the clue.
'VIOLIN' is hidden in the letters of 'ravioli noodles'.
'with' is the link.
(Other definitions for violin that I've seen before include "It'a played with a bow" , "Menuhin's instrument" , "Instrument with bow" , "An elevated fiddle" , "Instrument with four strings" .)