Hazelnut Roll with Creamy Prune Filling

Viennese and Hungarian repertoires offer a variety of fragrant nut sponge cakes, layered or rolled around apricot jam or whipped cream spiked with liqueurs, or sometimes spread with jam first, then with whipped cream.

This is a good, basic nut cake roll, filled with a deeply flavored prune lekvar lightened with whipped cream. Lekvar is an old Hungarian standby—a thick paste of prunes or apricots, used to fill all sorts of pastries. It’s easy to make your own, but you c