Introduction

This Fiesta Chicken Casserole is a flavorful, easy-to-make dish perfect for busy weeknights or casual gatherings. Packed with tender chicken, zesty spices, and melty cheese, it brings a comforting Tex-Mex twist to your dinner table.

Fiesta Chicken Casserole Recipe - Recipe Image

Ingredients

2½ cups uncooked rotini pasta
1 cup sour cream
1 cup salsa
1 packet mild taco seasoning
½ teaspoon cumin
½ teaspoon garlic powder
½ teaspoon onion powder
1 can (15 oz) corn, drained
1 can (15 oz) black beans, drained and rinsed
2½ cups cooked chicken
2 cups shredded cheese

Instructions

Step 1: Preheat the oven to 350°F (175°C). Prepare a 9×13-inch baking dish by spraying it with cooking spray, then set aside.
Step 2: Cook the rotini pasta according to the package instructions until al dente. Be sure to salt the pasta water with about 1 teaspoon of salt for flavor.
Step 3: While the pasta cooks, in a large mixing bowl, combine sour cream, salsa, taco seasoning, cumin, garlic powder, and onion powder.
Step 4: Once the pasta is done, drain it without rinsing and add it directly to the sour cream mixture. Stir well to combine.
Step 5: Add the drained corn, rinsed black beans, cooked chicken, and 1 cup of shredded cheese to the bowl. Mix everything together thoroughly.
Step 6: Pour the mixture into the prepared baking dish and sprinkle the remaining 1 cup of shredded cheese on top. Cover the dish with foil and bake for 20 minutes.
Step 7: Remove the foil and bake an additional 5 minutes to let the cheese brown slightly.
Step 8: Garnish with extra sour cream, diced tomatoes, chopped cilantro, and avocado slices if desired. Serve warm.

Tips & Variations

Use rotisserie chicken for a quick and flavorful shortcut.
Swap mild taco seasoning for spicy if you like extra heat.
Mix in diced bell peppers or jalapeños for added crunch and flavor.
Try a blend of cheddar and Monterey Jack cheeses for a melty, rich topping.

Storage

Store any leftovers covered in the refrigerator for up to 3-4 days. To reheat, cover the casserole with foil and warm it in a 350°F oven until heated through, about 15-20 minutes. You can also microwave individual portions until hot.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I make this casserole ahead of time?

Yes, you can assemble the casserole and keep it covered in the fridge for up to 24 hours before baking. Just add a few extra minutes to the baking time if baking straight from the fridge.

Can I freeze the Fiesta Chicken Casserole?

This casserole freezes well before baking. Assemble and cover tightly, then freeze for up to 2 months. Thaw overnight in the fridge before baking as directed.

Fiesta Chicken Casserole Recipe

Print Recipe

★★★★★

4.4 from 107 reviews

Fiesta Chicken Casserole is a flavorful and easy-to-make baked dish combining tender rotini pasta, seasoned chicken, beans, corn, and melted cheese. This vibrant casserole brings together Mexican-inspired spices and creamy salsa for a comforting meal perfect for family dinners or potlucks.

Author: Lila
Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes
Yield: 6–8 servings 1x
Category: Casserole
Method: Baking
Cuisine: Mexican-American

Ingredients

Scale

Pasta

2½ cups uncooked rotini pasta

Seasoning Mixture

1 cup sour cream
1 cup salsa
1 packet mild taco seasoning
½ teaspoon cumin
½ teaspoon garlic powder
½ teaspoon onion powder

Other Ingredients

1 can (15 oz) corn, drained
1 can (15 oz) black beans, drained and rinsed
2½ cups cooked chicken, shredded or chopped
2 cups shredded cheese (cheddar or Mexican blend preferred)

Instructions

Preheat and prepare dish: Preheat your oven to 350°F (175°C). Lightly spray a 9×13 inch baking dish with cooking spray to prevent sticking and set it aside.
Cook pasta: Boil a large pot of salted water using about 1 teaspoon salt. Add the rotini pasta and cook until al dente according to package instructions. Drain the pasta but do not rinse it, as this helps the sauce adhere better.
Mix sauce ingredients: In a large mixing bowl, combine sour cream, salsa, mild taco seasoning packet, cumin, garlic powder, and onion powder. Stir well until all ingredients are uniformly blended.
Combine pasta and mix-ins: Add the drained hot pasta directly into the sour cream mixture and stir to coat fully. Then add the drained corn, rinsed black beans, cooked chicken, and 1 cup of the shredded cheese. Mix everything together evenly.
Assemble casserole: Pour the combined mixture into the prepared baking dish. Sprinkle the remaining 1 cup of shredded cheese evenly over the top. Cover the dish tightly with tin foil.
Bake: Place the covered casserole in the preheated oven and bake for 20 minutes to allow flavors to meld and cheese to melt.
Bake uncovered: Remove the foil and bake for an additional 5 minutes to brown the cheese slightly.
Garnish and serve: Optionally garnish with dollops of sour cream, diced tomatoes, chopped cilantro, and avocado slices. Serve warm. Store any leftovers covered in the refrigerator for 3-4 days.

Notes

Do not rinse the cooked pasta to help the sauce stick better.
Use mild taco seasoning for subtle heat, or swap for medium/hot for spicier flavors.
Feel free to add diced tomatoes, jalapeños, or olives for additional flavor and texture.
Leftover casserole keeps well for up to 4 days refrigerated and can be reheated in the oven or microwave.
For a dairy-free version, substitute sour cream and cheese with plant-based alternatives.

Keywords: fiesta chicken casserole, taco seasoning casserole, baked chicken pasta, Mexican casserole, rotini chicken bake