Preheat oven to 350 degrees F (175 degrees C).

In a large bowl, whisk together melted butter and sour cream until smooth.

Stir in the whole kernel corn, creamed corn, and Jiffy mix until just combined.

Pour batter into a greased 9x13 inch baking dish.

Bake for 45 to 50 minutes until the center is set and edges are golden brown.

Let rest for 5 minutes before serving.