In a deep fryer or a 4-quart heavy pot, heat the oil to 350°F.

In a large mixing bowl, combine the Bisquick mix, water, egg, white sugar, and cinnamon powder. Fold in the chopped apple.

Drop tablespoonfuls of the batter into the hot oil, working in batches. Fry for 2 to 3 minutes, turning occasionally, until they are golden brown. Use a slotted metal spoon to transfer the fritters to paper towels to drain.

Sprinkle the fritters with confectioners' sugar before serving.