01 -
Preheat oven to 350°F (175°C). Grease a 9 x 13-inch baking dish with butter or nonstick spray.
02 -
In a large mixing bowl, blend together the drained sweet corn, cream-style corn, sour cream, shredded cheddar cheese, melted butter, cornbread mix, and sugar until smooth and fully incorporated.
03 -
Pour the prepared mixture into the greased baking dish and spread evenly using a spatula.
04 -
Place the casserole in the preheated oven and bake for 45 minutes, or until the top is golden brown and the center is set.
05 -
Remove from the oven and allow to cool for 10 minutes before serving.