Heat oven to 350 F. Combine bananas, margarine and orange juice. Blend in eggs, vanilla and orange peel. Add combined dry ingredients and raisins; mix well. Drop by rounded teaspoonfuls onto ungreased cookie sheet. Bake 20 to 22 minutes or until light golden brown. Cool 1 minute on cookie sheet; remove to wire rack. Drizzle icing over cooled cookies. Store tightly covered. ORANGE ICING: Combine 3/4 cup powdered sugar, 4 to 5 teaspoons orange juice and 1 teaspoon grated orange peel. Mix until smooth. NUTRITIONAL ANALYSIS per serving: calories 138 carbohydrates 19 g protein 2 g fat 6 g calcium 9 mg sodium 70 mg cholesterol 20 mg dietary fiber 1 g