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.