Rolled Potato Dumplings (Krumpli Nudli)

Ingredients:

• 500 g potatoes (peeled)
• 1 cup all-purpose flour (approx.)
• 1 egg
• 1 tbsp butter
• 1 pinch salt

For coating:

• 1 cup breadcrumbs
• 2–3 tbsp butter
• 2 tbsp sugar