Blend 1 cup sugar, cocoa, cornstarch and salt together in bowl and set aside. Melt 1 cup chocolate chips in microwave, stirring twice (about 2 minutes). Set aside to cool slightly. Beat egg whites until soft peaks form. Add 1 cup of sugar and continue beating until it is the consistency of soft marshmallow creme. On low speed, gradually add dry ingredients into the meringue. Add melted chocolate and 1/2 cup of chocolate chips. Dough will be stiff. Roll into small balls using no more than 1 tablespoon of batter at a time. Roll in remaining powdered sugar (1/2 cup).

Place on parchment covered cookie sheets. Bake about 10 minutes at 350 degrees until puffed and cracked. Place parchment paper with cookies on top of a cooling rack for another 10 minutes Remove and cool another 10 minutes

Enjoy!