Stir the warm milk, yeast, and sugar together and let stand for 5 minutes, until foamy.
Add the egg, melted butter, and salt, then mix in the flour until a soft dough forms.
Knead the dough for 6 to 8 minutes, until smooth and elastic.
Place the dough in a greased bowl, cover, and let rise in a warm place for 60 minutes, until doubled.
Divide into 12 pieces, shape into rolls, and arrange in a greased 9-by-13-inch pan.
Cover and let rise for 30 minutes while the oven heats to 375°F.
Bake for 16 to 18 minutes, until golden, then brush with butter before serving.