In a large bowl, sift together the flour, sugar and salt. Add the grated butter and incorporate by hand then add the egg. Mix by hand then add the water. Gently knead until smooth and cut in half. (This recipe makes 2 pie crusts)
Flour a large working surface or parchment paper and roll the dough using a rolling pin. Carefully slip hand under the parchment paper and flip to transfer the crust on a 9 inch pie pan. Cut the edges and nicely fit the crust. Ready!
Recipe by The Gluten Free at https://www.theglutenfree.com/gluten-free-pie-crust/