Traditional Czech Plum Sheet Cake (Koláč na plech) 🫶 This classic Czech cake is made with a soft yeast dough that, once risen, is spread out onto a baking sheet. I top it with halved plums, cut side facing up, and sprinkle a bit of sugar over them—adjusting the amount depending on how tart the plums are. A touch of ground cinnamon adds extra flavor. Finally, I scatter a simple crumble topping made from flour, butter, and sugar over everything. After about 30 minutes of baking, you have a delici