Activate Yeast: Combine sugar and yeast in tepid water. Let stand for 5-10 minutes until foamy.

Mix Wet Ingredients: In a large bowl, mix warm milk, melted butter, sugar, beaten egg, and salt.

Combine Ingredients: Stir the yeast mixture into the wet ingredients. Gradually add 3 1/2 cups of flour to form a soft dough.

Knead Dough: Transfer the dough to a floured surface and knead for 4-5 minutes until smooth. Add more flour if necessary.

First Rise: Place the dough in a greased bowl, cover with plastic wrap, and let it rise in a warm spot until doubled in size (about 1 hour).

Shape Rolls: Punch down the dough and divide it into 12 equal portions. Shape each portion into two small balls and place them in greased muffin tins.

Second Rise: Cover the rolls and let them rise for another 45 minutes.

Bake: Preheat the oven to 350°F and bake the rolls for 20-25 minutes, or until golden brown.

Serve: Brush the warm rolls with melted butter and serve immediately.