06Cut out as many rounds as possible (about 12) with 3 1/2-inch fluted cutter, transferring as cut to a wax-paper-lined baking sheet. Chill rounds until firm, about 10 minutes, before decorating. Gather dough scraps and chill 20 to 30 minutes, then reroll, cut, and chill additional 31/2-inch rounds (reroll scraps only once) for a total of 16.07Cut out shapes from rounds with decorative cutters or a sharp paring knife, leaving a 1/2-inch border around edge, and reserve cutout pieces if desired for additional decoration. Brush tops lightly with milk. Lightly press reserved cutouts (if using) onto decorated pastry rounds and brush lightly with milk. Sprinkle remaining tablespoon sugar evenly over tops and chill while making bottoms.08Put oven rack in middle position and preheat oven to 375°F.09Roll out larger disk of dough into a 15-inch round (about 1/8 inch thick) on floured surface with floured rolling pin, lifting up dough carefully and flouring surface as necessary to keep dough from sticking. Cut out as many rounds as possible (about 12) with 4-inch cutter. Gather dough scraps and chill 20 to 30 minutes, then reroll and cut additional 4-inch rounds (reroll scraps only once) for a total of 16. Fit each 4-inch round into a tartlet pan (don't trim). Fill each tartlet with 3 tablespoons cooled filling and brush edge of pastry lightly with milk. Place decorated tops over filling in each tartlet, then press each top lightly around edge to help seal edges and trim pastry if necessary.10Bake tartlets on a large baking sheet until golden, 20 to 25 minutes. Transfer tartlets to a rack and cool 10 minutes. To remove tartlets from pans, cover 1 hand with a folded kitchen towel and invert tartlets 1 at a time onto towel, reinverting them onto a platter. Serve warm or at room temperature.