Hungarian Szilvás Gombóc (Plum Dumplings)

Ingredients:

Dough:

• 1 kg potatoes (boiled and mashed)
• 250–300 g all-purpose flour
• 1 egg
• 1 pinch salt

Filling:

• 10–12 plums (pitted)
• Sugar (for filling)
• Cinnamon (optional)

Coating:

• 100 g breadcrumbs
• 50 g butter
• 2–3 tbsp sugar