In reply to ewanjp:
I have not heard of any popular ridge scrambles on Sicily.
If you are at San Vito lo Capo then the ascent of Monte Cofano is a fairly tough walk with some easy scrambling. It is a pilgrimage path, but seems hard to follow leading to some adventures. One of the northern ridges has been climbed, reportedly 8hrs at UIAA III, I have looked from below and could only think that they avoided some difficulties, I was not tempted, a long way in the sun!
The walking near San Vito in the Zingaro National Park is very pleasant and interesting with ethnographic museums on the routes in the Park.
I have no experience further afield, but Madonie is well spoken of and not too far away.