MAKE THE CUPCAKES:
In a clean bowl, using clean beaters, beat the egg whites at high speed until soft peaks form. Add the remaining 2 tablespoons of sugar and beat until stiff and glossy. Beat one-fourth of the whites into the batter, then fold in the remaining whites until no streaks remain. Spoon the batter into the muffin cups, filling them halfway. Bake for 15 minutes, or until the cupcakes are springy when touched. Let the cupcakes cool for 5 minutes, then turn them out onto a wire rack to cool completely.