Mix flour, sugar, baking powder and salt; cut in margarine until mixture resembles coarse crumbs. Beat eggs, cream and orange peel. Add to flour mixture, mixing just until moistened. Shape dough into a ball. Knead 10 times on lightly floured surface. Divide in half. Roll out each half into a 12x6-inch rectangle. Spread 1 rectangle with preserves. Top with remaining rectangle. Cut into 8 (3-inch) squares; cut each in half diagonally. Place on lightly greased cookie sheet. Bake 12 to 14 minutes or until lightly browned. Sprinkle with icing sugar.
