Mexican Chicken Casserole with Corn Tortilla Layers

• It uses tortillas as sturdy layers rather than a crust. They soften in the sauce while still defining portions, so the casserole scoops neatly instead of turning into a loose skillet filling.
• Rotisserie chicken shortens the active work, but beans and corn carry the bulk. That balance makes six servings without relying on a large amount of meat or extra sides.
• The method separates sauce mixing from layering, which keeps the assembly orderly. Bake covered first, then uncover for browned cheese, avoiding dry tortilla edges and an overcooked chicken filling.

• 3 cups cooked chicken, chopped (420 g)
• 2 cups red enchilada sauce (480 g)
• 1 cup full-fat sour cream (240 g)
• 1 teaspoon ground cumin (3 g)
• 1 teaspoon garlic powder (3 g)
• 15 ounces canned black beans, drained and rinsed (425 g)
• 1 1/2 cups frozen corn, thawed (220 g)
• 1 4-ounce can diced green chiles (113 g)
• 18 six-inch corn tortillas (360 g)
• 3 cups grated Monterey Jack cheese, divided (300 g)
• 2 tablespoons neutral oil (28 g)

Ingredient notes

• Cooked chicken: Use 3 packed cups from a rotisserie bird, mixing white and dark meat when available. Cut larger pieces before measuring, because compact chunks make layering uneven and leave some portions short on chicken.
• Enchilada sauce: Choose a canned red sauce with a flavor you enjoy, since it seasons every layer. Salsa verde works too, but use a medium-thick version so the casserole does not become watery.
• Corn tortillas: Six-inch tortillas give distinct layers and hold their shape beneath the filling. Briefly dip each one in sauce rather than soaking it, which prevents a gummy center after baking.
• Black beans: Drain and rinse them well, then pat the colander dry before adding. Beans bring bulk and a creamy contrast, while removing their packing liquid keeps the sauce from thinning during the covered bake.
• Cheese: Monterey Jack melts smoothly, while cheddar gives a sharper finish; use either or combine them. Grate a block when possible, because finely grated cheese distributes more evenly across the top and between all the layers.

1. 1Heat oven and prepare dish

   Heat the oven to 375°F. Lightly oil a 9-by-13-inch baking dish, including corners. In a large bowl, stir enchilada sauce, sour cream, cumin, garlic powder, and salt until no streaks remain. Reserve 1/2 cup sauce for the first tortilla layer and topping.

   

2. 2Build the filling

   Add chicken, black beans, corn, green chiles, and half the cheese to the bowl. Fold gently until ingredients are coated, stopping as soon as chicken is evenly distributed. Overmixing breaks beans and makes filling pasty. Stop before it becomes heavy and dense. Taste the filling for salt now.

   

3. 3Layer tortillas and filling

   Spread the reserved sauce across the dish bottom. Arrange six tortillas in an overlapping layer, tearing two to cover gaps. Spoon half the chicken mixture over them and level it gently. Repeat with six more tortillas and the remaining filling, pressing lightly so the layers settle without compacting.

4. 4Finish the top

   Scatter the remaining cheese over the final tortilla layer, leaving a small border at the edges. Cover the dish tightly with foil. The cover holds in moisture while the tortillas soften and the center heats through. Place the casserole on a rimmed sheet pan if your dish is full.

5. 5Bake, then brown

   Bake covered for 20 minutes. Remove the foil and bake 10 to 15 minutes longer, until the cheese is browned in spots and the sauce bubbles around the edges. Check the center reaches 165°F before removing the dish. Rest it for 10 minutes, which firms the layers for cleaner portions.

6. 6Top and portion

   Cut the rested casserole into six squares. Add cilantro, sliced scallions, avocado, jalapeños, or crushed tortilla chips at the table. Serve with lime wedges for brightness. For lunch containers, let portions cool until barely warm before packing, then keep toppings in a separate container for better texture.

• Use a ceramic or metal 9-by-13-inch dish, not a deep disposable pan. A shallow, broad casserole browns more evenly and gives the tortillas room to form clear layers.
• Keep the sauce moderately thick. If your enchilada sauce pours like broth, simmer it for several minutes before mixing; thin sauce can leave the lower tortillas soft and fragile.
• Let the casserole rest the full 10 minutes after baking. Cutting immediately releases sauce across the dish, while resting lets the cheese and tortillas settle into stackable squares.
• Use two forks to separate large chicken pieces before combining. Small, bite-size pieces spread through each portion better than long strips, which tend to collect near the center of the dish.

Serve this casserole with thin-sliced lettuce, lime wedges, and a quick tomato salad dressed with oil and salt. A bowl of rice works when you need a larger table, but the beans and tortillas already make each serving filling. Set out hot sauce, diced avocado, cilantro, and crushed chips so everyone can adjust their plate. For a casual spread, add a simple slaw with cabbage, radish, and lime.