Combine sugar and cinnamon in a small bowl. Set aside.
Line a plate with paper towels and set aside. Have a second plate or serving tray ready for the cinnamon sugar dusted donut holes.
Place your frying oil in a dutch oven over medium heat. Use a candy thermometer to ensure you bring the oil to 350F.
Cut each biscuit with a small circular cookie cutter, then shape similarly sized balls of dough with the remaining biscuit dough.
Once oil is hot, fry donut holes in groups of 5 or 6 for about 1 minute per side, until golden brown.
Set fried donut holes on the paper towel lined plate for a minute, then while still warm, transfer to the bowl with cinnamon sugar and swirl to coat. Remove to a separate plate.
Once all donut holes have been fried, turn off the heat for the oil.
you will need approximately 4 cups of oil to fry the donut holes, but the amount will differ based on the size of your dutch oven or whatever you are using to fry them. You want at least 3-4" of depth. You can use peanut, canola or vegetable oil.