The link with the recipe at the top of the thread doesn't work anymore. I dug up the recipe at archive.org. Here it is:
https://web.archive.org/web/20210417183126/http://www.bettycrocker.com:80/recipes/chicken-tamale-casserole/3fa83365-8b4c-41a3-853e-90a00f696ea41 (14 3/4-oz) can creamed corn
1 (8.5-oz) box corn muffin mix
1 (4.5-oz) can Old El Paso™ chopped green chiles
1/4 cup sour cream
1 egg
1 teaspoon ground cumin
1 1/2 cups shredded Mexican blend cheese, divided
2 cups shredded cooked chicken
1 (10-oz) can Old El Paso™ red enchilada sauce
Toppings: sour cream, diced avocado, diced tomatoes, cilantro
1 Preheat oven to 400° F and spray a 9 x 13 baking dish with cooking spray.
2 In a large bowl, combine the creamed corn, muffin mix, chiles, sour cream, egg, cumin, and 1/2 cup of the shredded cheese.
3 Bake for 20-25 minutes or until edges are golden brown and the middle is set.
4 Use the back of a wooden spoon (or any other utensil) to make dents in the top of the surface.
5 In a medium bowl, combine the chicken and the enchilada sauce and pour over the top of the baked corn mixture. Sprinkle with remaining 1 1/2 cups of the shredded cheese.
6 Bake for 5-10 minutes or until cheese is melted.
7 Remove from oven and let cool slightly. Slice into squares and top with sour cream, diced avocado, diced tomatoes, and cilantro if desired.