Preheat and Prepare. Preheat oven to 350°F/177°C and spray a baking dish or 1 ½ quart casserole dish with non-stick cooking spray or grease with 1 tablespoon of butter.
Non-Stick Cooking Spray
Whisk. In a large mixing bowl, whisk the eggs, sour cream, and melted butter until well combined.
2 Large Eggs, 1 Cup Sour Cream, ½ Cup Salted Butter
Combine. Add the corn muffin mix, whole corn kernels, and creamed corn and mix until well combined.
Bake. Pour the cornbread batter into the prepared pan and bake for 55 to 60 minutes or until the top and edges are golden brown. It’s okay if the center is wobbly.
Serve and Enjoy. Remove the casserole from the oven and serve. This casserole is best enjoyed when served warm.
Notes
My Top Tips♡ Melt the butter in the microwave using a 1-cup measuring cup. The larger cup helps keep the butter from splattering.♡ For a pudding-like center, bake the casserole for the minimum time and check it for doneness. The edges should be set, and a tester will come out clean, but the center will have a slight wobble.Make-Ahead & StorageMake-Ahead: Cornbread casserole is essentially a quick bread and can't be made ahead. But you can assemble the ingredients ahead of time to make this casserole in a jiffy.Storage: Leftover casserole can be stored in the refrigerator covered in plastic wrap or in an airtight container for up to 4 days. Unfortunately, it does not freeze well.