In a small bowl, add ½ cup softened butter, 1 Tbsp cinnamon, ¼ tsp salt, ½ cup brown sugar and stir until evenly combined.
Remove the dough from the fridge. Add to a greased, high-side baking sheet and stretch or roll out the dough. It will be elastic and may be hard to get the full surface area of the pan--that's ok.
Using your fingers or a spoon, add globs of the cinnamon filling across the flattened dough, and smear across into a roughly even layer. Using a fork or your hands, fold the dough into thirds. Stretch out a little (close to the previous size as you layered the filling)
Allow to rise 1½ - 4 hours uncovered in a warm, dry spot.