Split each ladyfinger and spread the raspberry mixture equally between the halves. Replace the tops of the ladyfingers and place on a baking sheet. Melt the chocolate chips and shortening in a small saucepan over medium-low heat. Drizzle over the ladyfingers and chill for at least 1 hour, or until the chocolate is firm. Serve, or cover and chill until ready to serve.
Strawberry works fine, too.
I've even made it a few times with orange marmalade, and what a combo that is tangy orange with chocolate drizzle.