In a large bowl, combine the warm milk, 3 tablespoons of sugar, and active dry yeast. Stir until the yeast is dissolved and let the mixture sit for 5 minutes.
Add the flour, 1/2 cup melted butter, and salt to the yeast mixture. Mix until a soft dough forms. Knead the dough for 5 minutes, then let it rest for 10 minutes.
Roll the dough out on a lightly floured surface into a 12x12-inch square. Spread the 1/2 cup melted butter over the dough. Sprinkle with 1/2 cup sugar and 2 teaspoons cinnamon.
Roll the dough into a log and slice it into 12 equal pieces. Place the pieces in a greased 9x13-inch baking dish. Sprinkle with chopped pecans, if desired.
Bake at 375°F for 20-25 minutes, or until the buns are golden brown. Let cool before serving.
Interesting Facts
Cinnamon buns were first invented in Sweden in the 15th century.
The Swedish word for cinnamon bun is "kanelbulle", which translates to "cinnamon bun" in English.
Cinnamon buns are often served on special occasions, such as birthdays and holidays.