Combine the flour, sugar, flax seeds, baking soda and cinnamon in a large bowl. In a separate bowl, combine the margarine, water and vanilla, then add to the dry ingredients and mix until a dough is formed.
Heat a pizelle or waffle cone maker and grease each side with cooking spray. Roll about 1 tablespoon of dough into a ball and place in the center of the waffle cone maker. Close the lid, latching it closed, if possible - this will keep them as flat as possible.
Cook for 1 minute, or until golden brown. Gently remove them from the waffle cone maker and transfer to a wire rack and cool completely.