Preheat oven to 375°F. Grease a 1 ½ quart baking dish.
In a large bowl, whisk together the melted butter, eggs, and sour cream. Stir in the cream-style corn and corn kernels, followed by the salt and corn muffin mix. Stir until well combined.
Pour the mixture into the prepared baking dish and use a spatula to smooth the top. Bake for 40-55 minutes or until golden brown and the center is set.