Preheat oven to 425˚F.

In a large bowl, whisk together the dry ingredients, including jalapenos and corn if using, until well combined. Form a well in the middle of the mixture. Add eggs, buttermilk, and milk until just combined. Stir in the melted butter until all ingredients are well incorporated.

Pour batter into pan and bake for 25 minutes until golden brown and slightly cracked on the surface. Remove from oven. Allow to cool for 5-10 minutes. Invert onto a plate to remove from the pan, slice, and serve.