- Butter a 9x13-inch baking pan.
 
 
- Sprinkle your counter or working surface generously with all-purpose flour. Place the dough on the floured counter and knead gently to begin to form a rectangle. Sprinkle a rolling pin with flour and use it to roll the dough into a long rectangle of about 10-inches wide by 24-inches long. 
- Leaving a 1-inch frame around the rectangle spread the dulce de leche across the length of the dough to form a centered and long 6-inch stripe. Sprinkle the chopped pecans, the cinnamon, and the butter chunks all over the surface, except for that 1-inch frame. 
- Preheat the oven to 350 degrees. 
- Working lengthwise, roll up the rectangle tightly. Brush the top 1 inch edge of the rectangle, with water, and close the roll up. Cut into 12 rolls: I like to cut the log in half first, then that half in half, and each of those quarters into 3 rolls. Place them in the buttered baking dish. Cover the baking dish with a kitchen towel, and let them rest in a warm area of your kitchen with no drafts or air currents, until they double in size, about an hour. 
- Bake the cinnamon rolls for 27 to 30 minutes, until they are fully cooked and golden brown on top. Remove from the oven.