Name: Creamy Mexican Street Corn Casserole Recipe
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Ingredients: 4 cups corn kernels; ⅓ cup mayonnaise; ¼ cup Mexican crema or sour cream; 1 teaspoon chili powder; ½ teaspoon garlic powder; ½ teaspoon kosher salt; Juice of 1 lime; ½ cup crumbled cotija cheese, divided; 2 tablespoons chopped fresh cilantro, divided

This creamy Mexican street corn casserole packs all the tangy, smoky punch of elote into one warm, scoopable side. It bakes up bubbly and golden in about half an hour and disappears fast at cookouts and weeknight dinners alike.

What Makes This Casserole So Good

You get sweet corn kernels coated in a lime-spiked, chili-seasoned sauce with salty crumbles of cotija in every bite. The oven turns the whole thing hot and gooey while the top gets a few toasted spots. It tastes like classic street corn but you can spoon it straight from the dish.

The texture is what I keep coming back to. There is a creamy, almost spoonable base with enough structure to hold together on the plate. Leftovers reheat well, so it earns its spot on a make-ahead table just as easily as a Tuesday dinner.

Ingredients

4 cups corn kernels : fresh, thawed frozen (patted dry), or well-drained canned corn all work
⅓ cup mayonnaise : full-fat gives the richest base, but light mayo does fine in a pinch
¼ cup Mexican crema or sour cream : crema is thinner and tangier, sour cream makes it a little richer
1 teaspoon chili powder : use a mild blend or chipotle chili powder for more smoke
½ teaspoon garlic powder
½ teaspoon kosher salt
Juice of 1 lime: (about 2 tablespoons)
½ cup crumbled cotija cheese, divided : save a couple tablespoons for the top
2 tablespoons chopped fresh cilantro, divided : stems and leaves are both fine

Variations / Substitutions

More heat : add a pinch of cayenne or a minced jalapeño to the sauce.
Cheese swap : if cotija is hard to find, feta or queso fresco give a similar salty bite.
Dairy-free : use a neutral vegan mayo and a plain dairy-free yogurt or sour cream alternative. Skip the cheese or use a crumbly plant-based cheese.

Try Mexican Street Corn Dip next time you want a scoopable snack with chips.

How To Make Creamy Mexican Street Corn Casserole

Step 1: Blend the Creamy Sauce

In a large bowl, whisk together the ⅓ cup mayonnaise, ¼ cup crema, 1 teaspoon chili powder, ½ teaspoon garlic powder, ½ teaspoon salt, and the lime juice until smooth and no white streaks remain. The sauce should look pale orange and smell bright and smoky.

This is the flavor base of the whole dish, so taste it now. You can add an extra pinch of salt or chili powder if you like, but remember the cotija cheese will bring saltiness later.

Step 2: Fold in the Corn and Cheese

Add the 4 cups of corn kernels and about half of the crumbled cotija cheese to the bowl. Use a flexible spatula and fold everything together until the corn is evenly coated and the cheese is distributed throughout. No dry corn patches should be hiding at the bottom.

The mixture will look thick and creamy, with little white flecks of cheese visible. If you are using frozen corn that has been thawed and patted dry, this step comes together cleanly. Wet corn can make the casserole a bit looser, so take the extra minute to drain it well.

Step 3: Bake Until Bubbly

Scrape the corn mixture into a greased 8×8 or similar small baking dish and spread it into an even layer. Place the dish in a 400°F oven and bake for 20 minutes. The edges will start bubbling and the surface will look set with a few golden spots of cheese.

A slightly longer bake of a few extra minutes will not hurt it if you like a few more browned bits on top. Just watch so the cheese does not burn.

Step 4: Top and Serve Hot

Pull the dish from the oven and immediately sprinkle the remaining cotija cheese and the chopped cilantro over the top. A final light dusting of chili powder and a squeeze of fresh lime right before serving wakes everything up. Spoon it onto plates while still warm and gooey.

The cheese will soften from the heat without fully melting, keeping the salty bites you expect from street corn.

A Few Extra Tips

Fresh corn off the cob in summer is the sweetest option and needs no extra prep.
To bring in more charred flavor, toss the corn kernels in a dry hot skillet for a few minutes before mixing them into the sauce.
This casserole doubles easily in a 9×13 pan for a crowd. Just expect the bake time to drop by a couple minutes because the mixture is thinner.

Bake times vary slightly with the dish you use.

Dish Size	Bake Time	Check For
8×8 or 9×9 pan	20 mins	Bubbly edges and set center
9×13 pan	15 to 18 mins	Uniformly golden top
2-quart round casserole	22 to 25 mins	Firm in the middle, lightly browned

Storing the Leftover Casserole

Refrigerate : Cool completely, cover the dish, and store for up to 3 days.
Reheating : A quick zap in the microwave works, but warming in a 350°F oven for about 10 minutes brings back more of the just-baked texture.

What Goes Well With Creamy Mexican Street Corn Casserole

Grilled chicken thighs are a natural partner because the tangy, creamy corn cuts through the smoky char of the meat. Carne asada or flank steak sliced thin and served alongside turns the meal into taco-night territory. A crispy pan-seared white fish like tilapia also sits well next to the sweet corn and lime.

Frequently Asked Questions

Can I assemble this a day ahead?

Yes. Mix everything except the final toppings, scrape it into the baking dish, cover, and refrigerate for up to 24 hours. Bake straight from the fridge, adding about 5 extra minutes.

Can I freeze the casserole?

I do not recommend it. The dairy base can separate and turn grainy when thawed and reheated.

Why did my casserole turn out watery?

The number one culprit is excess moisture from the corn. Thaw frozen corn completely and press out any liquid with a clean towel. If using canned corn, drain it well and give it a quick pat dry.