Stir mascarpone, syrup and milk until smooth. Whip cream until stiff. Coarsely crumble the Amarettini and put 3 tbsp. aside for sprinkling.
Mix mascarpone and cream loosely. Fold in amarettine crumbs and well 2⁄3 frozen raspberries. Pour the dessert immediately into a bowl or portion glasses and let it stand for 2-3 hours until the raspberries have just thawed.
Sprinkle the mascarpone cream with the remaining cookie crumbs and raspberries before serving.