Preheat oven to 350°. On a lightly floured surface, unroll pastry sheets. Using a floured 3-1/2-in. round cookie cutter, cut six circles from each sheet., In a small bowl, mix applesauce with 1-1/2 teaspoons cinnamon sugar. Place 2 teaspoons applesauce mixture on one half of each circle; dot with butter. Moisten pastry edges with some of the milk. Fold pastry over filling; press edges with a fork to seal., Transfer to ungreased baking sheets. Brush tops with remaining milk; sprinkle with remaining cinnamon sugar. Bake 12-15 minutes or until golden brown. Remove from pans to wire racks. Serve warm or at room temperature.