Ofen vorheizen: Preheat oven to 180°C and lightly grease a baking dish.
Make the dough: In a bowl mix flour, baking powder, and salt. Rub in the butter until crumbly. Add milk and mix into a soft dough.
Roll and fill: Roll the dough out on a floured surface into a rectangle. Spread apricot jam evenly over the dough.
Roll it up: Roll the dough like a Swiss roll to form a log.
Prepare syrup: Heat water, sugar, butter, and vanilla in a saucepan until sugar dissolves.
Backen: Place the rolled dough in the baking dish and pour the hot syrup over it. Bake for 30–35 minutes until golden and cooked through.
Serve: Slice and serve warm with custard or cream.