1In a small saucepan, melt the butter over low heat. Once melted, remove from heat and let it cool slightly.
In a large mixing bowl, combine the sugar, flour, yeast, and salt.
Add the melted butter and egg to the dry ingredients. Mix until a dough forms.
Knead the dough on a lightly floured surface for about 10 minutes, until it becomes smooth and elastic.
Place the dough in a greased bowl, cover it with a damp cloth, and let it rise in a warm place for about 1 hour, or until it has doubled in size.
Punch down the dough and divide it into 12 equal pieces. Shape each piece into a roll and place them on a greased baking sheet.
Cover the rolls with a damp cloth and let them rise for another 30 minutes.
Preheat the oven to 375°F (190°C).
Bake the rolls in the preheated oven for 15-20 minutes, or until they are golden brown.
Remove the rolls from the oven and let them cool on a wire rack before serving.