Spray the 9x13 pan (or large round pan) with cooking spray and set aside.
After the dough has risen for the two hours, put it on a floured surface and roll it out into a 12 x 18 inch rectangle. [If the dough is ever resistant, let it rest for 10 minutes. Don't overwork the dough trying to roll it out. It should roll out easily.]
Brush 2 tablespoons of very soft butter on to the dough with a pastry or silicone brush. You want to use very soft but not melted butter. Think of the butter as the glue that will hold the brown sugar chocolate mixture to the dough. You can also use your fingers or a knife to spread the butter.
Mix the brown sugar, cocoa powder and cinnamon together in a small bowl until the cocoa powder and cinnamon are incorporated into the brown sugar.
Sprinkle the brown sugar mixture evenly over the dough and lightly press it in.
Starting with the long side, roll the dough into a tight log.
Cut the dough into 9-12 pieces. I use 9 pieces for a large round pan or 12 pieces for a 9x13 pan. Use your favorite cutting method. If you aren't sure how to cut the roll, see my FAQ section for different cutting methods.
Add the cut sweet rolls into your sprayed pan of choice, cover with aluminum foil or plastic wrap and let rise for one hour. [For overnight rolls, cover and place directly in to the refrigerator. Remove next day and let sit on the counter for one hour to get to room temperature prior to baking.]