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Chicken Southwest Casserole - A Cozy, Flavor-Packed Weeknight Favorite

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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 servings
Ingredients Method

Ingredients
  

  • Cooked chicken: 3 cups, shredded or diced (rotisserie works great)
  • Pasta or rice: 8 ounces dry pasta (penne, rotini) or 3 cups cooked rice
  • Black beans: 1 can (15 oz), drained and rinsed
  • Corn: 1 can (15 oz) or 1 1/2 cups frozen, thawed
  • Bell pepper: 1 large, diced (red or yellow for sweetness)
  • Red onion: 1/2 cup, finely diced
  • Green chiles: 1 small can (4 oz), mild or hot
  • Diced tomatoes: 1 can (14.5 oz), drained
  • Creamy binder: 1 cup sour cream or Greek yogurt
  • Cheese: 2 cups shredded (cheddar, pepper jack, or a blend)
  • Broth: 1/2 cup chicken broth (adjust for desired creaminess)
  • Olive oil: 1 tablespoon, for sautéing
  • Lime juice: 1–2 tablespoons, fresh
  • Fresh cilantro: 1/4 cup, chopped (plus more for garnish)
  • Spices: 1 1/2 teaspoons chili powder
  • 1 teaspoon ground cumin
  • 1/2 teaspoon smoked paprika
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • 1/4–1/2 teaspoon chipotle powder or cayenne (optional, for heat)
  • Salt and black pepper to taste
  • Optional toppings: sliced jalapeños, avocado, pico de gallo, hot sauce

Method
 

  1. Preheat and prep: Heat your oven to 375°F (190°C). Grease a 9x13-inch baking dish.
  2. Cook the base: If using pasta, cook it in salted water until just al dente, then drain. If using rice, have it cooked and fluffed.
  3. Sauté aromatics: In a large skillet, warm the olive oil over medium heat. Add onion and bell pepper. Cook 4–5 minutes until softened and lightly golden.
  4. Season: Stir in chili powder, cumin, smoked paprika, garlic powder, onion powder, and optional chipotle. Toast the spices for 30 seconds until fragrant.
  5. Build the mix: Add black beans, corn, green chiles, and diced tomatoes to the skillet. Stir and let it bubble for 2–3 minutes. Season with salt and pepper.
  6. Make it creamy: Turn off the heat. Stir in sour cream (or Greek yogurt), 1 cup shredded cheese, lime juice, and chicken broth. Mix until smooth and creamy. Adjust salt, pepper, and lime to taste.
  7. Combine: In a large bowl, combine cooked chicken and pasta or rice with the skillet mixture. Fold gently so everything is evenly coated.
  8. Assemble: Spread the mixture into the baking dish. Top with the remaining 1 cup cheese.
  9. Bake: Place on the middle rack and bake 18–22 minutes, until the casserole is hot and the cheese is melted and lightly browned at the edges.
  10. Finish and serve: Let it rest 5–10 minutes to set. Sprinkle with chopped cilantro and add any optional toppings. Serve warm.