If you don't have gluten free pastry on hand, you can always make a lovely rice crust, which is delicious and wholesome too. (glutenfreedelightfullydelicious.com)
I almost never bake gluten - free, but maybe you can find a gluten - free pastry flour or a light flour suitable for baking cakes? (seitanismymotor.com)
This savory tart starts with an easy grain free pastry crust and is packed with caramelized onions, mushrooms and red chard. (fancy-edibles.com)