Generously spray a 8 x 8 square baking dish and set aside.
Melt margarine, and set aside to cool.
In a large bowl, mix all dry ingredients together with a whisk.
In another bowl or a measuring cup, combine the milk and the egg substitute.
Pour the milk mixture into the dry ingredients and stir with the whisk.
Pour the melted margarine into the bowl and stir t incorporate.
Pour the cornbread mixture into the prepared pan and bake for 20 minutes or until lightly browned, a tooth pick, inserted in the center, comes out clean and bread springs back when ligtly touched.