Preheat your oven to 350°F (175°C). Lightly grease a baking dish.
In a large bowl, combine the corn kernels, cream-style corn, and sugar. Mix well.
Add the melted butter, beaten egg, and milk to the bowl. Stir until fully combined.
Gradually add the cornbread mix to the bowl, stirring until just combined. Do not overmix.
Pour the mixture into the prepared baking dish and smooth the top with a spatula.
Bake in the preheated oven for 45 minutes or until the top is golden brown and the pudding is set.
Allow to cool for a few minutes before serving. Enjoy!