Pflaumenkuchen (Plum Cake)

Pflaumenkuchen is the late-summer cake every German bakery proudly displays from August through October when Italian prune plums hit peak season. A buttery shortbread-like dough goes onto a sheet pan, gets a thin layer of peach jam for moisture protection, then quartered plums stand in tight rows on top before baking.

The peach jam layer is the technique that separates a great pflaumenkuchen from a soggy one. As the plums release their juices during baking, the jam layer absorbs that liquid and prevents it from soaking down into the dough. Skip this and the bottom of your cake turns gummy.

The egg white wash brushed over the plums and dusted with flour creates a slight crust on the fruit, helping it caramelize on top without drying out. This is old-world German baking technique, and it’s worth the extra two minutes.

Pro Tips

• Use Italian prune plums (small, oval, deep purple), they hold their shape during baking better than round plums
• Press the dough firmly into the pan with floured fingers, this is a thick crust by design
• Pack the plum quarters tightly together, they shrink during baking
• Dust with powdered sugar just before serving for that bakery-window finish
• Best eaten the day it’s baked, the crust softens as it sits

Variations

• Substitute apples in winter as the recipe suggests, sliced thin and overlapped in fans
• Add a streusel topping (flour, sugar, butter, cinnamon) for the richer Streuselkuchen variation
• Brush with warmed apricot glaze after baking for a shiny, professional finish