Preheat the oven to 350 degrees.

Combine the margarine, sugar, soy milk, vanilla extract, and salt. Blend until smooth. Gradually add the flour to form a stiff dough. Roll the dough out on a flat surface and cut it into shapes. Arrange the cookies on a lightly greased cookie sheet. Brush the tops of the cookies with water and sprinkle them with sugar.

Bake for 10 to 20 minutes, or until golden brown. Cool on a wire rack before eating.