Make a yeast dough from the dough ingredients and cover and let rise for about 30 minutes. Knead again and roll out on the floured work surface to the size of a baking sheet. Place on a baking tray lined with baking paper and prick several times with a fork. Cover and let rise for 15 minutes.
For the topping, melt the butter and knead with the diced marzipan paste. Add sugar, 200 g flaked almonds and whipped cream. Bring to the boil while stirring, then allow to cool. Spread the lukewarm glaze on the dough and sprinkle 100 g flaked almonds on top.