Preheat your oven to 350°F (175°C).
In a large mixing bowl, combine the whole corn and cream-style corn.
Add the sour cream and melted butter to the corn mixture.
Stir in the corn muffin mix until well combined.
Fold in half of the shredded cheddar cheese.
Season the mixture with salt and pepper to taste.
Transfer the mixture into a greased 9x13-inch baking dish.
Sprinkle the remaining cheddar cheese on top.
Bake for 45 minutes or until golden brown.
Let it cool for 10 minutes before serving.