Tex-Mex Chicken Casserole is a hearty and flavorful dish that’s perfect for a family dinner or a casual get-together. It combines tender chicken with a mix of colorful veggies, black beans, corn, and plenty of cheesy goodness, all layered with a zesty tomato sauce and topped with crunchy tortilla chips for that classic Tex-Mex crunch.
I love making this casserole because it’s like a warm hug on a plate—easy to prepare and packed with flavors that everyone in my family goes crazy for. A little tip I’ve learned is to sprinkle fresh cilantro and a squeeze of lime right before serving to give it that fresh, bright kick. It really brings all the flavors together in the best way.
One of my favorite ways to serve it is with a dollop of sour cream or some guacamole on the side. It adds creaminess that cuts through the spices perfectly. Whether you’re making it on a busy weeknight or for a relaxed weekend, this casserole always hits the spot and leaves you wishing you had just a little more leftover for the next day.
Key Ingredients & Substitutions
Chicken: Shredded cooked chicken is great here. I often use rotisserie chicken for convenience, but leftover grilled or baked chicken works well too.
Rice: Long grain or Mexican rice adds texture and soaks up the sauce nicely. If you want, you can swap in brown rice for a healthier twist.
Corn and Black Beans: These give sweetness and creaminess. Frozen or canned corn works fine. For beans, black beans are classic, but pinto beans make a good substitute.
Salsa: Salsa is your main sauce here. Choose mild or spicy to match your taste. If you don’t have salsa, a mix of canned tomatoes and chili powder works too.
Cheese: Cheddar melts beautifully and adds flavour. Mexican blend cheese is a tasty alternative. For less fat, use part-skim mozzarella, but the dish will be less rich.
How Can I Make This Casserole Come Out Extra Cheesy and Moist?
The key is layering and baking properly. Here’s how:
- Mix the chicken, rice, veggies, and spices well so every bite is flavorful.
- Spread the mixture evenly in the dish and sprinkle cheese generously on top. Cheese helps keep moisture locked in while baking.
- Bake uncovered to melt cheese and let some edges crisp up, giving great texture.
- After baking, let it rest 5 minutes—this helps it set, so it slices cleanly and isn’t too runny.
- Top with fresh tomatoes and green onions just before serving for a fresh contrast to the creamy cheese.
Equipment You’ll Need
- Medium mixing bowl – for combining all the ingredients easily without making a mess.
- 9×13-inch baking dish – perfect size for even cooking and layering your casserole.
- Measuring cups and spoons – to get the right amount of spices, rice, and other ingredients.
- Sharp knife and cutting board – for chopping tomatoes and slicing green onions fresh and fast.
- Oven mitts – to handle the hot baking dish safely when removing from the oven.
Flavor Variations & Add-Ins
- Swap chicken for ground beef or turkey – adds a different texture and keeps the meaty flavor.
- Add black olives or diced jalapeños – for an extra tangy or spicy kick depending on your taste.
- Mix in canned diced green chilies – they bring a mild heat and smoky flavor perfect for Tex-Mex dishes.
- Top with crushed tortilla chips before baking – adds a crunchy layer that’s fun and tasty.
How to Make Tex-Mex Chicken Casserole
Ingredients You’ll Need:
Main Ingredients:
- 2 cups cooked, shredded chicken breast
- 1 cup cooked rice (preferably long grain or Mexican rice)
- 1 cup corn kernels (fresh, canned, or frozen)
- 1 can (15 oz) black beans, drained and rinsed (optional)
- 1 cup salsa (mild or spicy as desired)
Spices and Cheese:
- 1 tsp chili powder
- 1 tsp cumin
- ½ tsp garlic powder
- ½ tsp onion powder
- 1 cup shredded cheddar cheese (or Mexican blend cheese)
Garnishes and Extras:
- 2 green onions, thinly sliced
- 1 medium tomato, diced
- Salt and pepper to taste
- 2 tbsp olive oil or cooking spray
Time Needed:
This Tex-Mex Chicken Casserole takes about 10 minutes to prepare and 20-25 minutes to bake. Add 5 minutes for letting it rest after baking, so in total, plan for around 35-40 minutes to get your delicious casserole ready.
Step-by-Step Instructions:
1. Prepare the Baking Dish and Oven:
Preheat your oven to 375°F (190°C). Lightly grease a medium-sized baking dish with olive oil or cooking spray to prevent sticking.
2. Mix the Ingredients:
In a large bowl, combine the shredded chicken, cooked rice, corn, black beans (if using), salsa, chili powder, cumin, garlic powder, onion powder, salt, and pepper. Stir everything well until all ingredients are nicely mixed.
3. Assemble the Casserole:
Transfer the mixture into the prepared baking dish, spreading it out evenly for consistent cooking.
4. Add Cheese and Bake:
Sprinkle the shredded cheese generously over the top of the mixture. Place the dish in the oven and bake uncovered for 20-25 minutes, or until the cheese melts, bubbles, and the casserole is heated through.
5. Garnish and Serve:
Remove the casserole from the oven and let it rest for about 5 minutes. Then garnish with diced tomatoes and sliced green onions for a fresh and colorful touch. Serve hot, and if you like, add sour cream, guacamole, or tortilla chips on the side for extra flavor and texture.
Can I Use Frozen Chicken for This Casserole?
Yes, you can use frozen chicken, but be sure to fully thaw it first. The best way is to thaw it overnight in the fridge. Once thawed, shred the chicken before mixing it into the casserole.
Can I Make This Tex-Mex Chicken Casserole Ahead of Time?
Absolutely! Prepare the casserole up to the point of baking, cover it tightly, and refrigerate for up to 24 hours. When ready, bake it straight from the fridge, adding a few extra minutes to the baking time.
How Should I Store Leftovers?
Store leftovers in an airtight container and keep them in the refrigerator for up to 3 days. Reheat in the oven or microwave until warmed through for best results.
Can I Substitute the Rice With Something Else?
Yes, if you prefer, you can use quinoa, cauliflower rice, or even cooked pasta as a substitute. Just keep in mind that cooking times or liquid amounts may vary slightly.
