1Heat oven to 400°. Mix flour, cornmeal, baking powder, baking soda and salt in medium bowl. Cut in butter, using pastry blender or crisscrossing 2 knives, until mixture looks like fine crumbs. Stir in buttermilk so dough leaves sides of bowl and forms a ball.
2Turn dough onto lightly floured surface. Knead lightly 10 times. Pat or roll into 7-inch circle on ungreased cookie sheet that has been sprinkled with cornmeal. Score top into 8 wedges, cutting down halfway to the bottom.
3Bake 20 to 25 minutes or until light brown. Immediately remove from cookie sheet; carefully separate wedges. Serve warm.