Remove the dough from the refrigerator and unwrap. Divide the dough to make the portions you need and again pat gently into disks. On a lightly floured work surface, roll out each dough disk into a round about 1/4 inch thick and about 1 inch greater in diameter than the pan you are using (8 inches for a 7-inch pan; 4 inches for 3 1/2-inch tartlet pans). Drape the rolled-out dough into the tart pan(s), gently pushing it into the bottom edges and against the pan sides to make a strong and straight shell. Trim the edges flush with the rim of the pan(s) using a sharp knife, or roll the rolling pin over the edges to cut off the excess dough. Prick all over the bottom with the tines of a fork and place in the freezer to firm up for 30 minutes. (To store unbaked, wrap the dough ball tightly in plastic wrap and freeze for up to 2 months, or line the tart shell(s) with the dough as desired, cover with plastic wrapp, and freeze for up to 3 days. Thaw the frozen dough ball in the refrigerator for 3 to 4 hours before rolling and shaping.