You’ll need two sheets of puff pastry cut into equally sized circles. You can use a guide, like a 9-inch cake pan, placed on top and trace it with a knife. Do this with both sheets of pastry.

however it is also common to use shortcrust on the bottom with flaky pastry on top. I find the frozen sheets available in the supermarket are better to work with than frozen rolled pastry and they ...

On a lightly floured surface, unfold 1 sheet of the thawed puff pastry, keeping the other one in the refrigerator. Using a lightly floured rolling pin, roll the sheet into a 12-by-8-inch rectangle ...