Preheat the oven to 350 degrees and grease a 12-cup muffin pan with nonstick cooking spray.

Add the cinnamon roll dough pieces to the muffin cups.

Heat the pumpkin pie spice, brown sugar, butter, and pumpkin in a small skillet over medium low heat, stirring often. Continue cooking until the butter is melted and the sugar has dissolved.

Spoon the mixture evenly over the top of each muffin. Place a pan under the muffin pan in the oven to catch drips.

Cook for 20 to 25 minutes, until the cinnamon rolls are cooked through.

Allow to cool in the pan until safe to touch, then place a cookie sheet over the top of the pan and flip the muffins onto the pan.

Drizzle the cinnamon roll icing over the top of the muffins before serving.