Drain the boiled potatoes and let them cool slightly.
Mash the potatoes until smooth or pass them through a potato ricer for a finer texture.
In a large bowl, combine the mashed potatoes, all-purpose flour, and salt.
Mix until a soft dough forms. If the dough is too sticky, add a little more flour, but be careful not to add too much as the dough should remain soft.
Divide the dough into equal portions, about the size of a golf ball.
On a floured surface, roll out each portion into a thin round, about 1/8 inch thick.
Heat a dry, non-stick skillet or griddle over medium heat.
Cook each rolled-out dough round in the dry skillet for about 1-2 minutes on each side, or until golden brown spots appear and the lokše is cooked through.
Remove from the skillet and place on a plate. Brush each cooked lokše with melted butter (or duck/goose fat for a richer flavor).
Enjoy your meal!