Having just checked a website which mentions this dish but nothing else, I learn that it is, I quote,
....."the sweet, cinnamon- and raisin-filled pastry dessert popular at Christmastime...."
The closest I can find to it, is a rich, dense cake-like sweet, very popular at Christmas time, called in most regions of availability, 'Pan Forte'.
I am not claiming it is the same thing, but given that many older traditional recipes are extretemely provincial, this could account for our not being able to find it.
Here however, is an authentic, italian recipe for the christmas sweet, 'Pan Forte':
1/2 cup All-purpose unbleached flour, sifted
1/4 cup Unsweetened cocoa powder
1/4 tsp Ground cinnamon
1/4 tsp Ground allspice
3/4 cup Shelled almonds, blanched and toasted
3/4 cup Shelled hazelnuts, blanched and toasted
3/4 cup Candied orange peel; diced
3/4 cup Candied citron, diced
3/4 cup Candied mixed fruit
3/4 cup Honey
3/4 cup Granulated raw cane sugar
For dusting the panforte: Confectioner's or icing sugar
Preheat the oven to 300� F. Sift flour with cocoa, cinnamon, and allspice. Mix in nuts and fruit. Set aside. Combine honey and sugar in a large saucepan. Cook over medium heat for 10 minutes, stirring constantly with a wooden spoon. Syrup should register 238� F. on a candy thermometer, or a bit dropped in cold water should form a soft ball. Remove from heat. Add flour mixture and blend well. Pour into a well-greased 9-inch pie plate or a spring-form cake pan. Smooth surface with a wet knife. Bake in a preheated 300� F. oven for 30 minutes, or until firm. Remove from oven, sprinkle top with confectioners' sugar, and cool on a cake rack. When cake is cool, remove from pan and dust all sides with a thick coating of confectioners' sugar. Cut into wedges to serve.