Before leaving for your camping trip, combine sugar and cinnamon in a gallon-sized ziplock bag.
Heat oil in a cast-iron skillet on your camping stove. Using a knife or food-safe scissors, cut the biscuits into fourths.
Place doughnuts into hot oil and cook 15 – 30 seconds per side, depending on oil heat.
Flip doughnuts halfway through. Remove when golden brown on both sides.
Place on a paper towel, then place the doughnuts into the cinnamon and sugar blend in the ziplock bag. Serve hot!