Preheat the oven to 350 F. In a medium-sized mixing bowl, using a spatula, mix the whole kernel corn, the cream-style corn, sour cream, melted butter, corn muffin mix, sugar, and salt
Spray the bottom and sides of a 7 x 11-inch baking dish with non-stick cooking spray and pour in the batter. Cook for about 40-45 minutes. Take it out of the oven, sprinkle the cheddar cheese evenly on top, and bake for 5-10 more minutes or until the cheese is bubbly and melted