In a small bowl, mix together the brown sugar and cinnamon and set aside.
Once the dough has finished rising, lightly punch it down to remove any excess air in it. Transfer the dough to a clean and lightly floured surface, then roll it out to a 12″ x 16″ (30 x 40 cm) rectangle. If the dough keeps springing back a lot while rolling it out, let it rest for 5 minutes before continuing.
Melt the butter, then spread it over the dough. Sprinkle the cinnamon sugar over the butter in an even layer.
From the longer side, roll up the dough into a tight long. Use a sharp knife or floss to cut the dough into 6 even pieces. Evenly space out the rolls over the pecans.
Lightly cover the pan with a towel, and let the rolls rise in a warm environment until they puff up a bit (~30 minutes).
Preheat the oven to 350°F / 175°C.
Once the rolls have puffed up, brush the tops of them with milk or heavy cream. Bake for 20-25 minutes, until the internal temperature of the rolls has reached 190°F / 88°C.
Let the rolls sit for at least 15 minutes, then flip them over onto a large plate or serving platter. Serve and enjoy!