Preheat oven to 375 degrees Fahrenheit or 190 degrees centigrade.
Grease a round baking pan (8-inch or 9-inch round pan).
On a lightly floured surface, roll the pizza dough into a ¼ inch thick rectangle.
Spread softened butter evenly over the rolled dough up to the edges.

Sprinkle all over with sugar and cinnamon powder generously.

Starting with the long side of the rectangle (the one closest to you), gently roll the dough to form a tight log.

Transfer the baking pan into the preheated oven and bake for 20 to 25 minutes until the rolls are fully baked and turn light golden brown.
Meanwhile, while the rolls are baking, prepare the icing.
In a small bowl, mix ½ cup of icing sugar with a little milk or water (I used 2 teaspoons) with a spoon or whisk to a smooth mixture. Keep aside.
Once the baked cinnamon rolls are out of the oven, cool for a few minutes.

Gently, drizzle, pour or spoon the prepared icing over the baked rolls to coat them evenly.

Serve decadent, warm, divine cinnamon rolls immediately.