Creating Jiffy Corn Casserole Thanksgiving is straightforward. Follow these steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prepare Baking Dish: Grease a 9×13-inch baking dish with butter or non-stick spray.
3. Mix Ingredients: In a large mixing bowl, combine Jiffy Corn Muffin Mix, whole kernel corn, cream-style corn, sour cream, and melted butter.
4. Add Cheese: If desired, stir in shredded cheddar cheese for an extra layer of flavor.
5. Season Mixture: Add salt and pepper to taste, mixing well to incorporate all ingredients.
6. Transfer to Baking Dish: Pour the mixture into the prepared baking dish and spread it evenly.
7. Bake: Place in the oven and bake for 45 minutes, or until the top is golden brown and a toothpick inserted in the center comes out clean.
8. Cool: Remove from the oven and let it cool for about 5-10 minutes before serving.

These steps will guide you through creating this delightful casserole effortlessly.