Dark Chocolate Triangles

1 stick melted butter
300 gr graham crackers, crushed
1/2 cup confectioners sugar
3 eggs
2/3 cocoa powder
1/2 cup dry Marsala vine

Beat the eggs then add the sugar, cocoa powder and vine mix well.
Add the melted butter when it is warm.
Pour the mixture over the crushed graham crackers, mix well (but softly) to combine.
Pour the mixture onto a piece of aluminum foil and shape, and freeze for at least 2 hours.
Serve thickly sliced.