This creamy, cheesy Fiesta Chicken Casserole is made with tender rotini, zesty salsa, and black beans, ready in just 45 minutes. Bubbling melted cheddar creates a golden crust that seals in the rich, comforting sauce underneath. I love making this for busy weeknights because it turns simple pantry staples into a hearty family meal.
Why This Classic Works
I used to think all casseroles ended up dry or bland, but the combination of sour cream and salsa here changes everything. The acidity in the salsa cuts through the heavy cream of chicken soup, creating a balanced sauce that coats every noodle perfectly.
My biggest early mistake was fully cooking the pasta before baking, which resulted in a mushy texture. Now I always drain the rotini while it still has a firm bite, allowing it to finish cooking right in the sauce.
Fiesta Chicken Casserole Ingredients
- 12 oz (340g) rotini pasta, uncooked
- 3 cups cooked chicken, shredded or cubed
- 1 can (10.5 oz) cream of chicken soup
- 1 cup sour cream
- 1 cup chunky salsa (medium heat)
- 1 packet (1 oz) taco seasoning
- 1 can (15 oz) black beans, drained and rinsed
- 1 can (15 oz) whole kernel corn, drained
- 2 cups shredded cheddar cheese, divided
- 1/4 cup chopped fresh cilantro (optional garnish)

How To Make Fiesta Chicken Casserole
- Prep The Oven: Preheat your oven to 350°F (175°C) and lightly grease a 9×13 inch baking dish with non-stick cooking spray.
- Cook The Pasta: Boil the rotini in salted water according to package directions, but drain it 2 minutes early so it remains al dente.
- Mix The Sauce: In a large mixing bowl, combine the cream of chicken soup, sour cream, salsa, and taco seasoning until smooth.
- Combine Ingredients: Fold in the cooked chicken, drained black beans, corn, cooked pasta, and 1 cup of the cheddar cheese until everything is evenly coated.
- Bake The Dish: Transfer the mixture to the prepared baking dish, top with the remaining 1 cup of cheese, and bake for 25-30 minutes until the cheese is bubbly and golden.

Recipe Tips
- Shred Your Own Cheese: Pre-shredded cheese contains anti-caking agents that prevent it from melting smoothly, so buy a block of sharp cheddar for the best goo factor.
- Control The Spice: If you are cooking for sensitive palates, use mild salsa and swap half the taco seasoning for plain cumin and paprika.
- Rotisserie Shortcut: A store-bought rotisserie chicken yields the perfect amount of meat for this dish and adds extra savory flavor to the filling.
What To Serve With Fiesta Chicken Casserole
Since this dish is heavy on carbs and dairy, a crisp green salad with a lime vinaigrette cuts through the richness beautifully. You can also serve it with warm cornbread or tortilla chips to scoop up any extra sauce.

How To Store
Leftovers stay fresh in the refrigerator for up to 3 days when stored in an airtight container. This meal freezes well for up to 2 months; just thaw it in the fridge overnight before reheating in the oven.
FAQs
- Can I use raw chicken?
No, the baking time is not long enough to safely cook raw meat. You must cook the chicken in a skillet or boil it before adding it to the casserole mixture. - Can I swap the pasta for rice?
Yes, you can substitute 3-4 cups of cooked white or brown rice for the pasta. Make sure the rice is fully cooked before mixing it in, or it will be crunchy. - Why is my casserole watery?
This usually happens if the salsa was very liquid or the veggies weren’t drained well. Make sure to rinse and drain the beans and corn thoroughly before mixing.
Nutrition
- Calories: 520 kcal
- Total Fat: 22g
- Saturated Fat: 11g
- Cholesterol: 85mg
- Sodium: 1150mg
- Total Carbohydrate: 52g
- Protein: 30g
Fiesta Chicken Casserole
6
servings15
minutes30
minutes45
minutesCreamy, cheesy Fiesta Chicken Casserole with rotini, black beans, and corn is ready in 45 mins for a perfect weeknight dinner. This easy bake combines tender chicken, zesty salsa, and cooling sour cream for a comforting family meal.
Ingredients
12 oz (340g) rotini pasta, uncooked
3 cups cooked chicken, shredded or cubed
1 can (10.5 oz) cream of chicken soup
1 cup sour cream
1 cup chunky salsa (medium heat)
1 packet (1 oz) taco seasoning
1 can (15 oz) black beans, drained and rinsed
1 can (15 oz) whole kernel corn, drained
2 cups shredded cheddar cheese, divided
1/4 cup chopped fresh cilantro (optional garnish)
Directions
- 1. Prep The Oven: Preheat your oven to 350°F (175°C) and lightly grease a 9×13 inch baking dish with non-stick cooking spray.
- 2. Cook The Pasta: Boil the rotini in salted water according to package directions, but drain it 2 minutes early so it remains al dente.
- 3. Mix The Sauce: In a large mixing bowl, combine the cream of chicken soup, sour cream, salsa, and taco seasoning until smooth.
- 4. Combine Ingredients: Fold in the cooked chicken, drained black beans, corn, cooked pasta, and 1 cup of the cheddar cheese until everything is evenly coated.
- 5. Bake The Dish: Transfer the mixture to the prepared baking dish, top with the remaining 1 cup of cheese, and bake for 25-30 minutes until the cheese is bubbly and golden.
