| 1/4 | cup | margarine -- softened |
| 2/3 | cup | sugar |
| 2 | egg whites -- divided | |
| 2 | tablespoons | water |
| 2 | teaspoons | vanilla extract |
| 3/4 | cup | all-purpose flour |
| 1/4 | teaspoon | baking powder |
| 1/3 | cup | unsweetened cocoa |
| 8 | peppermint candy pieces -- finely crushed | |
| Vegetable cooking spray |