First, I preheat my oven to 375°F (190°C). Then I lightly grease a 9x13-inch baking dish. This ensures nothing sticks and makes cleanup easier later.
In a big bowl, I combine the shredded chicken, diced tomatoes with green chilies, black beans, corn, salsa, sour cream, and taco seasoning. I make sure it’s all evenly mixed—this blend is the heart of the casserole.
I start by placing half of the tortilla strips across the bottom of the baking dish. This creates a sturdy base that absorbs all the yummy flavors.
Next, I spoon half of the chicken mixture over the tortilla strips. I follow it up with a layer of cheddar and Monterey Jack cheese. I like to spread the cheese evenly for a nice melt.
I repeat the layers with the remaining tortillas, chicken mixture, and top it all off with the rest of the cheese. The layering makes every bite balanced and delicious.
I cover the casserole with foil and bake it for 20 minutes. Then I remove the foil and bake for another 10 to 15 minutes, until the cheese is golden, melted, and bubbly on top.
Once out of the oven, I sprinkle chopped cilantro over the top. It looks great and adds a burst of freshness.