In a bowl, mix flour, sugar, and yeast.
Add warm milk, butter, and egg, then knead until a soft dough forms.
Cover the dough and let it rise for about 1 hour until it doubles in size.
Divide the dough into small round buns and place them on a baking tray.
Prepare a sweet topping with powdered sugar and butter, then spread it on the buns.
Let the buns rest for another 15 minutes.
Bake in a preheated oven at 180°C (350°F) for 15–18 minutes until golden brown.