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Fiesta Chicken Casserole Recipe

4.8 from 171 reviews

Fiesta Chicken Casserole is a flavorful and hearty baked pasta dish combining rotini, chicken, black beans, corn, and a zesty mixture of sour cream, salsa, and taco seasoning. This easy-to-make casserole is perfect for weeknight dinners, offering a satisfying blend of Tex-Mex flavors topped with melted cheese and fresh garnishes.

Ingredients

Scale

Pasta & Sauce

  • 2½ cups uncooked rotini pasta
  • 1 cup sour cream
  • 1 cup salsa
  • 1 packet mild taco seasoning
  • ½ teaspoon ground cumin
  • ½ teaspoon garlic powder
  • ½ teaspoon onion powder

Vegetables & Protein

  • 1 can (15 oz) corn, drained
  • 1 can (15 oz) black beans, drained and rinsed
  • 2½ cups cooked chicken, shredded or chopped

Dairy

  • 2 cups shredded cheese (cheddar or Mexican blend recommended)

Instructions

  1. Preheat and Prepare: Heat your oven to 350°F (175°C). Lightly spray a 9×13 inch baking dish with cooking spray and set it aside for later use.
  2. Cook Pasta: Boil the rotini pasta in salted water (about 1 teaspoon salt) until al dente according to package instructions. Drain the pasta but do not rinse it to retain starch for better sauce adherence.
  3. Mix Sauce: In a large mixing bowl, combine the sour cream, salsa, taco seasoning, cumin, garlic powder, and onion powder. Stir until evenly mixed to create a flavorful sauce.
  4. Combine Ingredients: Add the drained pasta into the sauce mixture and stir well to coat. Then fold in the drained corn, rinsed black beans, cooked chicken, and 1 cup of shredded cheese, mixing everything thoroughly.
  5. Assemble Casserole: Transfer the mixture to the prepared baking dish and evenly spread it out. Sprinkle the remaining 1 cup of shredded cheese over the top to create a cheesy crust.
  6. Bake Covered: Cover the casserole with aluminum foil and bake in the preheated oven for 20 minutes, allowing everything to meld and heat through.
  7. Bake Uncovered: Remove the foil and bake for an additional 5 minutes to melt and slightly brown the cheese topping.
  8. Garnish and Serve: Optionally garnish with extra sour cream, diced tomato, chopped cilantro, and avocado slices before serving. Store leftovers covered in the refrigerator for 3-4 days.

Notes

  • Use mild taco seasoning for a balanced flavor, or substitute with medium/hot for more spice.
  • Salt the pasta water well to enhance the overall dish seasoning.
  • Do not rinse the pasta after cooking to help the sauce stick better.
  • Leftovers keep well refrigerated for up to 3-4 days, making this dish suitable for meal prepping.
  • Optional garnishes like avocado and cilantro add freshness and texture contrast.

Keywords: Fiesta Chicken Casserole, Tex-Mex casserole, chicken casserole, baked pasta casserole, black beans, corn, taco seasoning, easy dinner, weeknight meal