Preheat oven to 350°F. Lightly grease or spray a 9x9-inch baking pan with baking spray, or use a little bit of the butter in the wrapper.
In a large bowl, stir together: ½ cup melted butter, 2 lightly beaten eggs, 1 8.5 oz package of Jiffy cornbread mix, 1 can of whole kernel corn, 1 can of cream-style corn, and 1 cup sour cream until well combined. If using any optional mix-ins, fold in.
Nutrition information estimate based on 8 servings.Store leftover Corn Soufflé in an airtight container in the refrigerator for up to 3 days. Leftovers can be frozen tightly wrapped in plastic for a month,