Add <quantity>1</quantity> egg and <quantity>200<unit>ml</unit></quantity> of milk to a stand mixer bowl

Add <quantity>35<unit>g</unit></quantity> of sugar and <quantity>47<unit>ml</unit></quantity> of water

Mix to combine

Add <quantity>585<unit>g</unit></quantity> all-purpose flour and <quantity>8<unit>g</unit></quantity> dry yeast

Add <quantity>14<unit>g</unit></quantity> of salt and <quantity>134<unit>g</unit></quantity> of cooked and mashed potatoes. Set the stand mixer with the hook attachment

Mix until the dough comes together

Add <quantity>58<unit>g</unit></quantity> of softened butter. Knead until the butter is completely incorporated

Cover the bowl with a kitchen towel and let it rise in a warm place for 1h, until the dough has almost doubled in size

Dust a work surface with all-purpose flour and divide the dough into 12 pieces

Grease <quantity>12</quantity> burger tins with butter

Roll each piece into a ball and place in the greased tins

Cover with a kitchen towel and let them rise for 1h until the buns double in size

Preheat the oven to <temperature>210<unit>°C</unit></temperature>

Bake the buns for 20m until deep golden brown. Remove from the oven

Melt <quantity>1<unit>tbsp</unit></quantity> of butter and brush it over the buns

The potato bun is ready

These buns are perfect for hamburgers. Enjoy!