Whisk Flour, Cornmeal, Sugar, Baking Powder, Baking Soda, And Salt In A Large Bowl. Whisk Buttermilk, Eggs And Butter In A Separate Large Bowl. Stir The Liquid Mixture Into The Dry Mixture Until Blended And Smooth. Heat A Lightly Oiled Griddle Or Skillet Over Medium-High Heat. For Each Pancake, Pour 1/4 Cup Batter On Griddle And Cook Until Browned, About 1 1/2 Minutes. Flip And Cook Until Browned On The Other Side, About 1 Minute. Continue With Remaining Batter.