Preparation
Preheat the oven to 375 degrees. Combine 3/4 cup of the blue cornmeal, the flour, and the salt in a medium bowl. Cut in the softened margarine with a pastry blender until the mixture resembles course meal. Sprinkle the skim milk over the cornmeal mixture, stirring just until the dry ingredients are moistened.
2) Turn the dough our onto a lightly floured surface; knead 5 to 6 times. Roll the dough to 1/8-inch thickness on a lightly floured surface; cut into rounds with a 2-inch biscuit cutter.
3) Place the rounds on an ungreased baking sheet. Sprinkle evenly with the remaining 2 tablespoons of cornmeal. Bake for 8 to 10 minutes or until lightly browned.
4) Remove from the baking sheets immediately, and cool on wire racks. Store in an airtight container.