Cooking Corn: You can cook the ears by steaming, grilling or boiling, but my favorite method is roasting. Leave the husks on the ears, but peel away the very outer, dry layers and cut off the excess silk. Preheat your oven to 350ºF. Place the ears on a rack in the center of the oven, and cook for about 30 minutes. Let cool before removing from the husks.