Place the tortillas on a smooth working surface and cut them into quarters using a knife.
Pour oil into a heavy skillet over medium heat.
Once the oil is hot, add 4 to 6 tortilla pieces of tortillas at a time and fry until golden and puffy.
The flip side of the tortilla pieces and fry until the other becomes golden.
Once ready, remove the sopapillas from the skillet, transfer them to a plate lined with a paper towel, and let them drain.
In the meantime, in a bowl, add sugar and cinnamon powder, and mix well.
Once the sopapillas are drained, generously sprinkle the sugar and cinnamon powder mixture and serve.