German wiener apfelkuchen (apple cake from vienna) is an apple cake recipe with a shortcrust base, chopped apples, and a lemon-flavored cake layer. The sugar and almonds sprinkled on top make a delightfully crunchy topping. It's a great change from a pie. This authentic recipe calls for an 11-inch (26 cm) springform pan but a 10-inch pan will suffice. You just might need to bake the cake a little longer.