modified from doriegreenspan.com
Makes 1 galette crust
Gather the dough into a ball, flatten it into a disk and put it between two large pieces of parchment paper. Roll the dough, while it’s still cool, into a circle about 12 inches in diameter. Don’t worry about getting the exact size or about having the edges be perfect; when you construct the galette, the edges will be bunched up and pleated and they’ll only look prettier if they’re a bit ragged. The dough will be somewhat thick and that’s fine—you want to have a little heft for a free-form pastry.
Slide the rolled-out dough, still between the paper, onto a baking sheet or cutting board and freeze for at least 1 hour or refrigerate for at least 2 hours. (Well wrapped, the dough can be refrigerated for up to 2 days or frozen for up to 2 months.)
When you’re ready to use the dough, leave it on the counter for a few minutes, just so that it’s pliable enough to lift and fold without cracking.
Storing: The dough can be kept in the refrigerator for up to 2 days or wrapped airtight and stored in the freezer for up to 2 months. If you’ve frozen the dough, leave it on the counter to come to a workable texture and temperature.