Preheat the oven to 400° F.
Grease a 13x9 inches casserole pan and set it aside.
Heat a large pan over medium-highheat with some avocado oil.
Cook the fajita veggies, putting in first those that take longer to cook.
Toss in the cooked corn, beans, seasonings, and Rotel.
Cook until everything is hot, and the seasonings are fragrant.
Spoon the mixture into the casserole dish (or a lined baking dish), smoothing it into an even layer. It should reach about 2/3 of the casserole dish. If you have any extra, save for burritos or a Mexican scramble later!
Mix the dry cornbread ingredients in a large mixing bowl.
Create a well in the dry ingredients and pour in the wet ingredients.
Mix until well combined, trying to remove any clumps.
Carefully pour and smooth the cornbread batter over the veggie and bean mixture in the casserole dish.
Sprinkle half the grated cheese over the casserole, and place in the oven.
Cook 20 minutes, remove from the oven and add the remaining cheese.
Place back in the oven and cook until a toothpick comes out of the center clean, and the top is golden. This took me about an additional 10 minutes. Then remove it from the oven.
(Optional) Zig-zag some tomato enchilada sauce across the top.
Cut into 8 slices. If desidered, serve with fresh cilantro and/or avocad. Enjoy!