9 across
Snack:
portion
of
spinach
ossobuco
(6)
Snack: portion of spinach ossobuco (6)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
Right, so Snack at the front is your definition, pointing to a nibble like nachos. Then "portion of" is the hidden-word indicator, telling you to go fishing inside "spinach ossobuco" — and sure enough, spiNACH OSsobuco has NACHOS sitting there in a straight run through the middle.