Begin by opening the package of biscuits and separating them.
Using a small knife cut a small hole in each of the biscuit and set aside the extra dough for doughnut holes.
Mix the white sugar and cinnamon together in a bowl.
Heat some oil in a large pot on the stove top to about 350 degrees.
Fry two donuts at a time for about one minute per side or until golden brown.
Drain on paper towels and coat them in the cinnamon sugar mixture.
If desired, sprinkle with powdered sugar.
Cool slightly and serve warm.