Preheat your oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish to keep the casserole from sticking.
In a large bowl, stir together the shredded chicken, enchilada sauce, salsa, cream cheese, and sour cream until well combined and creamy.
Warm the tortillas briefly in the microwave or on the stove to make them pliable. This helps prevent tearing when you layer.
Spread a thin layer of the chicken mixture on the bottom of the prepared dish. Layer with tortillas, then more filling, and a sprinkle of cheese. Repeat until you’ve used up the ingredients, finishing with a layer of cheese on top.
Tuck a light drizzle of olive oil and a pinch of cumin and garlic powder across the top for extra flavor. Season with a little salt and pepper.
Bake for 20–25 minutes, or until the casserole is bubbly and the cheese on top is melted and lightly golden.
Remove from oven and let rest for 5–10 minutes before slicing. This helps the layers set and makes servings cleaner.
Serve with your favorite toppings like sliced avocado, chopped cilantro, a dollop of sour cream, or a squeeze of lime for brightness.