Plum filled potato dumplings with vanilla sauce

Name: Plum filled potato dumplings with vanilla sauce
Prep time: 60 min
Total time: 120 min
Yield: 4 porties
Cuisine: Belgian
Ingredients: hot water; floury potatoes; milk; white sugar; egg yolks; vanilla pod; unsalted butter; dried breadcrumbs; white sugar; ground cinnamon