preheat oven to 350F. Spray cookie sheet
in a medium bowl, sift together flour, cornstarch, baking powder.
in a mixer bowl, cream together margarine and sugar. add soy milk and extract, mix well.
add flour mix to wet ingredients, stir until well combined, scraping the sides with a rubber spatula to make sure nothing gets lost in translation.
divide dough into walnut-sized portions, shape into balls. roll into cinnamon sugar and bake for 10-12 minutes: the cookies must look dry on the top and lightly brown on the bottom.
remove from cookie sheet and let cool on rack before storing.
http://havecakewilltravel.com/2008/05/21/vegetarian-times-snickerdoodles/