Step 1: Preheat your oven to 350°F (175°C). Lightly grease a 9×13 inch baking dish with butter or non-stick spray. This prepares the stage for your perfect corn casserole recipe, ensuring a smooth release after baking.
Step 2: In a large mixing bowl, combine the drained whole kernel corn and the undrained creamed corn. Stir them together until well incorporated. The combination of textures is key for this classic corn casserole recipe.
Step 3: Add the package of dry corn muffin mix to the corn mixture. Do not prepare the muffin mix separately; just add the dry contents directly to the bowl. Stir gently until just combined. Be careful not to overmix, as this can lead to a tougher texture in your corn casserole recipe.
Step 4: Fold in the sour cream and the 1/2 cup of melted butter. Mix until everything is thoroughly incorporated and the batter is smooth and consistent. This step is vital for achieving the creamy, rich texture of this easy corn casserole recipe.
Step 5: Pour the corn casserole mixture into your prepared 9×13 inch baking dish. Use a spatula to spread it evenly. For an extra golden finish, you can dot the top with a few small pats of butter before baking.
Step 6: Bake for 45-60 minutes, or until the top is golden brown, the edges are bubbly, and a knife or toothpick inserted into the center comes out mostly clean. Baking time may vary slightly depending on your oven. The perfect corn casserole recipe has a slightly firm yet still creamy center.
Step 7: Once baked, remove the corn casserole from the oven and let it rest for 5-10 minutes before serving. This allows the casserole to set, making it easier to scoop and preventing it from being too runny. Your delicious corn casserole recipe is now ready to enjoy!