To prepare the tartlet shells, roll out the pastry to a thickness of 1/16 in. (2 mm) on a lightly floured surface.
Cut out 15 circles using the cookie cutter. Line the pastry circles into the tartlet pans so they stand about ¼ in. (5 mm) above the sides of the pans, to compensate for shrinkage. Chill for 30 minutes.