1. In a small bowl, combine sugar and cinnamon. Set aside.
2. Fill a wide, shallow pan with 1 inch of oil. Heat the oil to 370 degrees.
3. Meanwhile, arrange the biscuits on a baking sheet. Using a 1-inch diameter round cookie cutter, cut out the center of each biscuit.
4. Drop the doughnuts into the hot oil and cook for 1 to 2 minutes or until golden brown, turning doughnuts if necessary. Transfer the doughnuts immediately to a baking sheet lined with paper towels and sprinkle generously with cinnamon sugar. Serve warm.
Makes 10 doughnuts.
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