Set the oven's temperature to 350 degrees. Grease a muffin tin thoroughly with pan spray; I suggest utilizing a flour-containing baking spray, such as Baker's Joy.
Combine the sugar and cinnamon in a medium-sized bowl and keep it aside.
Each crescent roll dough tube should be rolled out to a 14 by 10 inch rectangle. Distribute evenly 3 tablespoons of softened butter onto each dough sheet. Distribute a quarter of the cinnamon sugar mixture onto per sheet, making sure to distribute it evenly.
Along the long edge of each sheet, tightly wrap each one up, pushing the dough taut as necessary. To make a total of six short logs, cut each rolled-up sheet of dough in half. Each short log should be cut in half lengthwise to reveal the layers within. Starting at one end of each divided part, carefully roll each one, making sure the cut layers are facing up. The result will be a dough roll that resembles a pinwheel, despite its sloppy appearance. Place the exposed end in the well of the muffin pan that has been prepared by pinching it to the side that it touches. Continue until all the logs are wrapped up and you have 12 cruffins by using the leftover dough.
Bake for 20 to 25 minutes, until the sides are deeply golden brown and the centers are cooked through. Your oven may require a slightly different amount of time for baking. Add another minute or two to the baking time if the middle still appears gummy or doughy.
When the cruffins are done, gently take them out of the muffin tin and toss them in the remaining cinnamon sugar right away. Keep them moving around in the pan! Take caution since they will be quite hot. If they cool down in the muffin tin, it will get harder to remove them and the cinnamon sugar won't adhere to them.
Before serving, let them cool for ten to fifteen minutes.