In small bowl, combine flour, baking powder & salt; set aside. In small saucepan over low heat, melt 1 cup mint flavored semi-sweet chocolate morsels. In large mixer bowl, beat margarine and sugar until creamy. Add melted morsels and vanilla extract. Beat in eggs. Gradually beat in flour mixture. Stir in remaining 1/2 cup mint chocolate morsels. Wrap dough in plastic wrap; freeze 30 minutes until firm. Preheat oven to 350°F. Shape dough into 1 inch balls; coat with confectioners' sugar. Place on ungreased cookie sheets. Bake 10-12 minutes until tops appear cracked. Let stand 2 minutes. Remove from cookie sheet; cool. Yield: 3 dozen Submitted by: L. English