Slice each jalapeno down the center and carefully remove all the seeds and veins..set aside. In a medium bowl, mix up the Cornbread batter according to the box instructions, add in the Corn and 1 cup of the Cheddar. Fill each Jalapeno half with some batter! Sprinkle them all with the remaining 1/2 cup of Cheddar. Place them on a baking rack & sheet pan, bake them at 350 for about 15-20 minutes, or until the Cornbread is firm and cooked through. They will be puffed and cheesy too!