Add the oil to a dutch oven and set over medium heat on the stovetop.

Wait about five minutes for oil to reach 375-400F, where the oil looks to be shimmering and dancing.

While waiting for the oil to come to temperature, remove the Uncrustables from their packaging.

When the oil is ready add 3-4 at a time and brown on each side, less than a minute, using a spider strainer to flip each sandwich.

Remove the sandwiches from the oil to a paper towel lined plate.

In a large bowl, whisk together the cinnamon and sugar.

While the sandwiches are still warm, one at a time, swirl in the cinnamon sugar mixture on all sides.