Preheat oven to 350°F (175°C).

In a large bowl, combine whole kernel corn and cream-style corn.

Add corn muffin mix to the bowl.

Mix all ingredients until well combined.

Melt margarine in a separate bowl or in the microwave.

Pour the melted margarine into the corn mixture.

Stir until the margarine is evenly distributed.

Pour the mixture into a 9 x 13-inch baking dish.

Spread the mixture evenly in the dish.

Bake in the preheated oven for 45 minutes.

Check for doneness by inserting a toothpick into the center. If it comes out clean, the casserole is ready.

If not, continue baking for a few more minutes until the toothpick comes out clean.

Remove from the oven and let cool slightly before serving.