For Kids: Place warm Bunuelos in a paper bag and shake with cinnamon sugar. Cinnamon Sugar: Combine 1 cup granulated sugar and 2 tsp. cinnamon.
For Upscale Version: Place a scoop of ice cream in individual serving bowls. Add desired number of Bunuelos and top with warm Bunuelo syrup. Bunuelo Syrup: In a medium saucepan, combine 1 cinnamon stick, 1 cup brown sugar, and 2 1/2 cups water. Bring to a gentle boil until syrup becomes thick and fine threads form when stirred with a wooden spoon. This can be made ahead and reheated before serving.