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.
