Combine first 6 ingredients in a medium bowl; make a well in center of mixture.
Combine buttermilk and next 3 ingredients; add to dry ingredients, stirring just until moistened.
Place cast-iron corn stick pans coated with cooking spray in a 425° oven for 3 minutes or until hot.
Remove pans from oven; spoon batter into pans, filling two-thirds full.
Bake at 425° for 10 minutes or until lightly browned.