Preheat oven to 350°F. Line a baking sheet with parchment paper.
Dissolve the yeast in the lukewarm milk.
Add the flour, sugar, vanilla sugar, salt, egg, and softened butter to a mixing bowl. Pour in the yeast mixture and knead everything into a smooth dough.
Let the dough rise, covered, in a warm place for about an hour, or until it has visibly increased in volume.
Wash and hull the strawberries, then quarter them.
On a floured work surface, usea rolling pin to roll out the dough. Make it roughly the same size as your baking sheet. Carefully place it on the sheet.
Spread the strawberries evenly over the dough.
Dot the dough with small pieces of butter and sprinkle with sliced almonds. Dust the cake with sugar.
Bake the cake in the preheated oven for about 25 minutes, until golden brown.
Let the cake cool completely after baking and then serve it, for example, with a scoop of ice cream.
