Mexican Chicken Casserole with Cheesy Enchilada Sauce

This easy Mexican Chicken Casserole comes together with just a few pantry staples and takes only minutes to assemble. Baked until bubbly and topped with crunchy tortilla chips, it’s a Tex‑Mex weeknight favorite the whole family will enjoy.

Perfect for Taco Tuesday or any busy evening, this casserole combines shredded chicken, beans, corn, and diced tomatoes for a complete, satisfying meal in one dish. It’s fast to prep and flexible to customize.

The casserole is hearty enough to stand on its own, but you can serve it with Mexican rice, refried beans, guacamole, or a slice of Mexican cornbread if you want a fuller spread.

This recipe relies on convenient, everyday ingredients, so it’s quick to prep and perfect for busy nights. Flavored with taco seasoning and melted cheese, it’s cozy, flavorful, and likely to become a go‑to family meal.

Ingredients To Make Mexican Chicken Casserole

See the recipe card below for exact measurements and full instructions.

Simple ingredients make this casserole quick to prepare. You’ll need:

• Shredded chicken – leftover chicken, rotisserie, or cooked breasts or thighs work well.
• Black beans – rinsed and drained. Pinto beans are an acceptable substitute.
• Diced tomatoes with green chiles – Rotel or your preferred brand.
• Southwest-style corn – corn with peppers for extra flavor, or use regular canned/frozen corn.
• Taco seasoning – homemade or store-bought.
• Tortilla chips – crushed for the base and a few more for topping.
• Shredded cheese – Mexican blend, cheddar, Monterey Jack, or Colby Jack.

How To Make Mexican Chicken Casserole

Preheat the oven to 350°F and lightly grease a casserole dish. In a large bowl, combine shredded chicken, black beans, diced tomatoes with chiles, Southwest corn, and taco seasoning. Mix until evenly combined.

Crush about 3 cups of tortilla chips and spread them in an even layer across the bottom of the prepared dish. Reserve a few chips for topping after baking.

Spread the chicken mixture over the crushed chips, then sprinkle shredded cheese evenly on top. Bake for 25–30 minutes, until heated through and the cheese is melted and bubbly.

When the casserole comes out of the oven, scatter additional crushed tortilla chips over the top for extra crunch. Let the casserole rest about 10 minutes before serving so it sets slightly and is easier to portion.

How To Store

Store leftovers covered in the refrigerator for up to 3 days, either in the baking dish covered with plastic wrap or in an airtight container.

Reheat in a 350°F oven for 10–15 minutes, or microwave in 30‑second intervals until warmed through.

Variations and Substitutions

This casserole is easy to adapt. Try these options to change the flavor or adjust to what you have on hand:

• Rotisserie chicken: Use pre-cooked rotisserie chicken to save time.
• Swap chips: Replace plain tortilla chips with Doritos (Nacho Cheese or Cool Ranch) for a bolder flavor.
• Use ground beef: Brown and season ground beef with taco seasoning instead of shredded chicken for a taco-style casserole.
• Add heat: Mix in diced jalapeños, use spicy taco seasoning, or top with pepper Jack cheese.
• Serve with toppings: Offer sour cream, salsa, pico de gallo, sliced jalapeños, chopped cilantro, black olives, or shredded lettuce for customizable servings.

Frequently Asked Questions (FAQ)

If you enjoy Mexican-inspired casseroles, try other similar recipes for more dinner ideas. This dish is adaptable, family-friendly, and simple enough to keep in rotation for busy nights.