Sift flour and salt together in a bowl.

Cut in butter and shortening using a pastry blender or your fingers until the mixture resembles coarse crumbs.

Gradually add water, mixing until a stiff dough forms.

Divide the dough into 2 equal portions.

Roll out each portion to 1/4-inch thickness on a lightly greased baking sheet.

Use a straight-edge knife to mark the dough into 1/2-inch squares.

Bake in a preheated oven at 350°F (175°C) for 20 minutes, or until lightly golden brown.

Let cool completely before serving.