Name: Mexican Cornbread Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Ingredients: 8.5 oz yellow cornbread mix; 15 oz sweet corn (, drained (or 1 1/2 cups fresh/frozen corn)); 4 oz diced green chiles (, drained); 2 large eggs; ½ cup sour cream (or Greek yogurt); ½ cup milk; ¼ cup melted butter (½ stick); 1 cup shredded sharp cheddar; ½ cup shredded cheddar (for topping); 1 jalapeño (seeded and minced (optional)); 1 tsp chili powder; ½ tsp ground cumin; Salt and black pepper (to taste); ¼ cup chopped cilantro (optional); Lime wedges and extra sour cream (for serving optional)

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There are few dishes that feel like a warm kitchen hug quite like a bubbling, cheesy cornbread casserole. If you want something that’s equal parts comforting and festive — something that makes people reach for seconds without even thinking — this Mexican cornbread casserole is it. It’s the kind of food that turns an ordinary night into a small celebration. A reader asked what to serve alongside this casserole and Honey Garlic Chicken Bowls make an easy pairing.

Mexican cornbread casserole in a cast-iron skillet topped with sour cream, avocado, jalapeño slices, cilantro, and melted cheddar over a savory beef, black bean, corn, and tomato filling.

Why you’ll love this recipe

This casserole takes a boxed cornbread mix and elevates it: fresh or canned corn kernels, a can of diced green chiles for a mild kick, sour cream for tang and moisture, and a blanket of melty cheddar on top. It’s forgiving, fast, and scales up beautifully for company. Little tips in the recipe below will help you get a golden top and the perfect, slightly-dense crumb you want from a savory cornbread bake. If you love corn’s smoky-sweet flavor, try my Street Corn Chicken Rice Bowl for another corn-forward meal.

Ingredients

Everything comes together in one bowl, and most of these are pantry staples. You’ll find the full amounts in the recipe card below.

1 (8.5 oz) box yellow cornbread mix
1 can (15 oz) sweet corn, drained — or 1 1/2 cups frozen/cooked corn
1 can (4 oz) diced green chiles, drained
2 large eggs
1/2 cup sour cream (or Greek yogurt)
1/2 cup milk
1/4 cup (1/2 stick) melted butter
1 cup shredded sharp cheddar, plus 1/2 cup for topping
1/4 cup chopped cilantro (optional)
1 jalapeño, seeded and minced (optional — for more heat)
1 teaspoon chili powder
1/2 teaspoon ground cumin
Salt and black pepper to taste

How to Make Mexican Cornbread Casserole

Follow these simple steps to bake a golden, cheesy casserole with pockets of sweet corn and little pops of green chile.

1. Preheat and prep

Heat your oven to 375°F (190°C). Grease an 8×8-inch baking dish with butter or nonstick spray. If you like a crunchy edge, line the dish with parchment and leave a little overhang for easy lifting.

2. Mix the wet ingredients

In a large bowl, whisk the eggs, sour cream, milk, and melted butter until smooth. Stir in the chili powder, cumin, salt, and pepper. If you’re using jalapeño, add it here so the heat distributes evenly.

3. Combine with dry mix and add-ins

Fold the cornbread mix into the wet ingredients until just combined — don’t overmix. Gently fold in the corn, drained green chiles, cilantro (if using), and 1 cup of cheddar. The batter will be thick but scoopable.

4. Bake

Transfer the batter to the prepared dish, smoothing the top. Sprinkle the remaining 1/2 cup of cheddar over the surface. Bake for 25–30 minutes, or until the top is golden and a toothpick inserted in the center comes out mostly clean with a few moist crumbs.

5. Rest and serve

Let the casserole rest 10 minutes before slicing — this helps it hold together and finish cooking gently. Serve warm with a dollop of sour cream, extra cilantro, or a squeeze of lime if you like a bright contrast.

Mexican cornbread casserole baked in a cast-iron skillet with a golden cornbread crust, seasoned ground beef, black beans, corn, melted cheddar cheese, avocado, jalapeños, cilantro, and sour cream.

Tips & observations

If you prefer a lighter texture, swap half the cornbread mix for a plain yellow cake mix — trust me, it creates a softer crumb (a trick for potlucks).
Try sharp cheddar for tang, Monterey Jack for meltiness, or a blend of both.
Make it vegetarian-friendly by using plant-based sour cream and butter alternatives.
Leftovers reheat well in a 350°F oven for 10–12 minutes or briefly in the microwave for single servings.
If you want to turn the same flavor profile into a warming soup, try Mexican Street Corn White Chicken Chili.

FAQs

Can I use fresh corn?

Absolutely. Cut kernels from about 2 ears of corn (or 1 1/2 cups) are delicious when tossed in. If corn is in season, this is the time to use it.

Can I make this ahead?

Yes — assemble the casserole, cover tightly, and refrigerate for up to 24 hours before baking. You may need to add a few extra minutes to the baking time if it’s chilled straight from the fridge.

What should I serve with it?

This casserole is a hearty side or a main on its own. A crisp salad balances the richness, and a protein like grilled chicken or pulled pork pairs nicely. For an easy pairing, try Honey Garlic Chicken Bowls alongside to balance the spice and creaminess.

How do I keep the top from getting too brown?

If the cheese is browning too quickly, tent a piece of foil over the dish after the first 15–20 minutes of baking.

Conclusion

Mexican cornbread casserole is the kitchen shortcut that tastes like you fussed for hours. It’s great for weeknight dinners, potlucks, or a simple Sunday supper when you want something cozy with a little kick. The next time you want those charred-corn flavors and melty cheese without standing over a grill, this casserole will be waiting — comforting, forgiving, and endlessly easy to tweak. If you get hooked on the corn-and-chile vibe, try turning the same flavors into a bowl of Mexican Street Corn White Chicken Chili for a warming twist. For snackable bites inspired by this casserole, the Corn Nuggets recipe is a fun spin.