Preheat oven to 425ºF.

If making pie crust:

Chill a mixing bowl and pastry cutter until cold. Whisk together flour and salt in mixing bowl then cut in vegan butter until the size of peas, using two knives or a pastry cutter. Begin to mix in ice water, about a tablespoon at a time, or until dough begins to form - it should just hold together. Don't overwork the dough, and keep the ice water at a minimum! The more you work the dough, the tougher it will get; the more ice water, the less flaky and rich.

Once dough is forming, push together mixture into a ball and wrap in plastic wrap, then flatten to a disk gently. Freeze at least 20 minutes, or until vegan butter is solid again.

To roll out: remove dough from freezer and divide in half using a pastry cutter or knife. Reform dough into a disk and roll one piece on a well-floured surface or pastry board, rolling from the center to the edge, turning 1/4 of the way after each roll, until it's large enough to fit in a deep dish pie pan. Using your rolling pin, roll crust up around the pin, move to the edge of your pie pan, then unroll. Place in freezer while you prepare the filling. For the top piece crust, wait to roll out until blueberries are prepared, or roll out and keep on the board in the freezer, so the vegan butter stays cold.