In a mixing bowl, combine gluten-free flour and salt.

Add cold, cubed butter and mix until the mixture resembles coarse crumbs.

Gradually add ice water, mixing until a dough forms.

Turn the dough onto a floured surface and roll it out into a rectangle.

Fold the dough into thirds, then roll out again. Repeat this process three times.

Preheat the oven to 400°F (200°C).

Place the rolled pastry on a baking sheet lined with parchment paper.

Bake for 15-20 minutes or until golden brown.