Baked Tex-Mex Chicken Casserole topped with melted cheese and colorful vegetables.

Delicious Tex-Mex Chicken Casserole

Delicious Tex-Mex Chicken Casserole is a hearty and flavorful dish that brings together tender chicken, melted cheese, and a mix of colorful veggies with classic Tex-Mex spices. It’s got a…

By Julia Reading time: 6 min
Tip: save now, cook later.
Serves 4–6

Delicious Tex-Mex Chicken Casserole is a hearty and flavorful dish that brings together tender chicken, melted cheese, and a mix of colorful veggies with classic Tex-Mex spices. It’s got a great combination of creamy, cheesy textures and a little bit of a spicy kick that makes every bite satisfying and fun. The corn, black beans, and bell peppers add a nice crunch and freshness to the dish.

I love making this casserole because it’s super easy to put together, and it always feels like a little celebration at the dinner table. Sometimes I like to add a dollop of sour cream or some fresh cilantro on top just before serving — it makes it taste even better. Plus, it’s a great way to use up leftover cooked chicken, which saves me time during the week.

My favorite way to enjoy this casserole is with a side of warm tortilla chips or a simple green salad. It’s also perfect for feeding a hungry family or having leftovers for lunch the next day. Whenever I make this, everyone asks for seconds, and I always feel glad that I have a dish that’s both tasty and comforting without much fuss.

Key Ingredients & Substitutions

Chicken: Using cooked, shredded chicken saves time and keeps the casserole moist. Rotisserie chicken works great here, but leftover baked or grilled chicken can be used too.

Black Beans and Corn: These add a nice texture and flavor contrast. Canned versions are convenient, but fresh or frozen also work well. Just drain canned beans and corn to avoid extra moisture.

Salsa: Salsa adds spice and moisture. Choose mild if you want less heat or medium if you like some kick. If you don’t have salsa, diced tomatoes with chili powder can be a good replacement.

Cheese: Cheddar or a Tex-Mex blend melts beautifully and adds rich flavor. For a milder taste, try mozzarella or Monterey Jack. Vegan cheese is a good swap for dairy-free diets.

Cream Cheese: Adding cream cheese makes the casserole extra creamy. If you prefer a lighter version, feel free to skip it or use Greek yogurt instead.

How Do I Get the Perfect Melty and Bubbly Cheese Topping?

Making sure the cheese melts evenly and forms that nice bubbly top requires the right oven temperature and timing. Here’s my approach:

  • Preheat your oven to 350°F (175°C) so it’s hot enough to melt the cheese without burning.
  • Spread the cheese evenly over the casserole’s surface to allow all parts to get coated.
  • Bake uncovered for 20-25 minutes. Keep an eye towards the end—when the edges turn golden and the cheese bubbles, it’s ready!
  • After baking, let the casserole rest for 5 minutes. This helps the cheese set slightly, making it easier to serve and more satisfying to eat.

These steps help you get that gooey, golden cheese layer that makes this dish so comforting and tasty.

Equipment You’ll Need

  • 9×13 inch casserole dish – perfect size for baking the casserole evenly and serving family-style.
  • Large mixing bowl – makes it easy to combine all the ingredients without spilling.
  • Spoon or spatula – great for mixing and spreading the casserole mixture smoothly in the dish.
  • Measuring spoons – help you add the right amount of spices for the perfect Tex-Mex flavor.
  • Oven mitts – essential for safely handling the hot casserole dish when it comes out of the oven.

Flavor Variations & Add-Ins

  • Swap chicken for cooked ground beef or turkey for a different protein that still pairs well with Tex-Mex spices.
  • Add diced jalapeños or a splash of hot sauce if you prefer a spicier casserole.
  • Mix in black olives or chopped green chilies to boost the Tex-Mex flavor and add a little something extra.
  • Top with pepper jack cheese or a Mexican blend for a creamier, slightly spicy finish.

Easy Tex-Mex Chicken Casserole

Delicious Tex-Mex Chicken Casserole

Ingredients You’ll Need:

Main Ingredients:

  • 3 cups cooked chicken, shredded
  • 1 cup canned black beans, drained and rinsed
  • 1 cup corn kernels (fresh, canned or frozen)
  • 1 cup salsa (mild or medium)
  • 1 cup shredded cheddar cheese (or Tex-Mex blend)
  • 1/2 cup diced onion (optional)
  • 1/2 cup diced green bell pepper (optional)
  • 1 tsp chili powder
  • 1/2 tsp ground cumin
  • 1/2 tsp garlic powder
  • Salt and black pepper to taste
  • 1/4 cup fresh cilantro, chopped (plus more for garnish)
  • 8 oz cream cheese, softened (optional for extra creaminess)

Toppings:

  • 1/2 cup sour cream
  • 1 medium tomato, diced

How Much Time Will You Need?

This recipe takes about 10 minutes to prepare and 20-25 minutes to bake. Allow an additional 5 minutes for the casserole to rest after baking before serving. Overall, you’ll have a hearty and delicious casserole ready in about 35-40 minutes.

Step-by-Step Instructions:

1. Prepare Your Oven and Dish:

Start by preheating your oven to 350°F (175°C). Lightly grease a 9×13 inch casserole dish to prevent sticking.

2. Mix the Ingredients:

In a large bowl, combine the shredded chicken, black beans, corn, salsa, diced onion, and green bell pepper. Add chili powder, ground cumin, garlic powder, salt, and pepper. Stir well to spread the spices evenly. If you are using cream cheese, blend it in now until the mixture is creamy.

3. Add Cheese and Cilantro:

Fold in the chopped cilantro and half of your shredded cheese into the mixture. This helps the casserole get cheesy and flavorful throughout.

4. Assemble and Bake:

Pour the mixture into the prepared casserole dish and spread it out evenly. Sprinkle the remaining shredded cheese over the top. Bake uncovered for 20-25 minutes until the cheese is melted and bubbly.

5. Rest and Garnish:

Remove the casserole from the oven and let it sit for 5 minutes to set. Then, add a dollop of sour cream, diced tomatoes, and a sprinkle of fresh cilantro on top for a fresh finish.

Serve your Tex-Mex Chicken Casserole with tortilla chips, a crisp green salad, or some Mexican rice for a delicious meal everyone will enjoy!

Can I Use Frozen Chicken for This Casserole?

Yes, you can! Just be sure to fully thaw the chicken before shredding. Thaw it overnight in the fridge or use the defrost setting on your microwave for quicker thawing.

Can I Make This Casserole Ahead of Time?

Absolutely! Prepare the casserole up to the baking step and cover it tightly with foil or plastic wrap. Store it in the fridge for up to 24 hours, then bake as instructed when ready.

How Should I Store Leftovers?

Keep leftovers in an airtight container in the fridge for up to 3 days. Reheat in the oven at 350°F (175°C) or microwave until warmed through, stirring occasionally.

Can I Substitute the Cheese?

Yes! You can swap cheddar for Monterey Jack, pepper jack, or a Mexican cheese blend. For dairy-free options, try vegan cheese shreds that melt well.

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