Sift and measure the flour into a medium-sized mixing bowl, adding the xanthan gum or psyllium husk powder.

Add the milk and oil.

Stir with a fork just until it comes together into a ball. It will be streaky

Let it rest for at least 15 minutes while you prepare your pie filling.

Roll out between two sheets of waxed paper, following the steps in the video.

If you are making a double-crust pie, measure the ingredients twice into two separate bowls. I don't know why, but it never works as well to double the recipe.