Blend cake mix, eggs, water, oil and chocolate drink powder and shape into a ball. Let stand 20 min. Form dough into 1/2" balls and place on greased cookie sheets. Flatten each with the smooth bottom of a drinking glass, greased once and dipped into the chocolate drink powder each time. Bake at 400 degrees for eight minutes. Remove cookies at once and immediately flatten with the back of a spatula. Let cool 20 min. Makes 100 halves. For filling, place gelatin in a heatproof cup. Add 1/4 cup cold water, stir well and place in pan of hot water until mix clears and gelatin is softened. Beat shortening until fluffy. Add sugar gradually and beat for 10 minutes. Mix in vanilla, beat in cooled gelatin mix. Spread about 1 teaspoon filling between two cookies. Press gently together so that filling comes to the edges of cookies. Chill until set.