Heat oven to 450°F. Spray cookie sheet with nonstick cooking spray. In medium bowl, combine flour, 1 tablespoon sugar and baking powder; mix well. Using pastry blender or fork, cut in margarine until mixture resembles coarse crumbs. Add milk; stir just until all dry ingredients are moistened. Drop dough by about 1/4 cupfuls onto sprayed cookie sheet; flatten slightly.