King Ranch casserole is a hearty Texas-style bake layered with chicken, tortillas, a creamy chile sauce, and plenty of cheese. This version uses Rotel tomatoes with green chiles for the familiar tangy kick, and a simple stovetop sauce keeps the filling flavorful without relying on canned cream soup.
Ingredients
- 2 tablespoons unsalted butter
- 1 medium yellow onion, diced (about 1 cup)
- 1 medium green bell pepper, diced (about 1 cup)
- 2 cloves garlic, minced
- 1/4 cup all-purpose flour
- 2 cups low-sodium chicken broth
- 1 cup whole milk
- 1 teaspoon ground cumin
- 1 teaspoon chili powder
- 1/2 teaspoon kosher salt, plus more to taste
- 1/4 teaspoon black pepper
- 1 can (10 ounces) diced tomatoes with green chiles, such as Rotel, drained lightly (reserve the juice if you want extra sauce)
- 3 cups cooked chicken, shredded or chopped (about 1 pound)
- 12 corn tortillas, each about 6 inches, cut into quarters
- 2 cups shredded cheddar cheese, divided
- 1 cup shredded Monterey Jack cheese
- 2 tablespoons chopped fresh cilantro, optional
Instructions
- Heat the oven to 350°F. Lightly grease a 9-by-13-inch baking dish. If your chicken is not already cooked, cook it separately until it reaches 165°F in the thickest part, then shred or chop it. Rotisserie chicken works well; remove the skin and bones before measuring.
- Melt the butter in a large saucepan or Dutch oven over medium heat. Add the onion and bell pepper and cook for 5 to 7 minutes, stirring now and then, until softened. Stir in the garlic and cook for about 30 seconds, just until fragrant.
- Sprinkle the flour over the vegetables and stir continuously for 1 minute so it coats them and loses its raw smell. Gradually whisk in the chicken broth, followed by the milk. Add the cumin, chili powder, salt, and pepper. Bring the mixture to a gentle simmer, whisking often, and cook for 3 to 5 minutes until thick enough to coat a spoon. Do not let it boil hard, which can make a milk-based sauce separate.
- Take the pan off the heat. Stir in the drained Rotel, chicken, and 1 cup of the cheddar. Taste the mixture and adjust the seasoning. If you prefer a looser, more tomato-forward filling, stir in a little of the reserved Rotel juice; add it gradually so the casserole does not become watery.
- Arrange one-third of the tortilla quarters over the bottom of the prepared dish, overlapping them to cover most of the surface. Spread half the chicken mixture over the tortillas. Add another third of the tortillas, then the rest of the chicken mixture, and finish with the remaining tortillas. Sprinkle the Monterey Jack and remaining 1 cup cheddar evenly over the top.
- Cover the dish loosely with foil and bake for 20 minutes. Remove the foil and bake for another 15 to 20 minutes, until the edges are bubbling and the cheese is melted and lightly golden. For food safety, the center should reach 165°F; check with an instant-read thermometer without touching the dish bottom.
- Let the casserole rest for 10 minutes before serving. This helps the sauce settle and makes neater portions. Scatter with cilantro if using.
Tips
- Drain the tomatoes lightly rather than pouring in all their liquid. Rotel varies in juiciness, and too much liquid can make the tortilla layers soggy. Save the juice and add only a spoonful at a time if needed.
- Use cooked chicken that is moist but not heavily seasoned. If using salted broth or a salty store-bought rotisserie chicken, start with less added salt and taste the sauce before assembling.
- Cut the tortillas into quarters and overlap them; gaps are fine, but avoid packing the layers tightly. Corn tortillas soften as they bake and help the casserole hold together.
- Let leftovers cool promptly. Refrigerate within 2 hours of baking, or within 1 hour if the room temperature is above 90°F. Divide a large leftover portion into shallow containers so it chills faster.
Serving Suggestions
Serve this rich casserole with a crisp green salad dressed with lime, or with sliced cabbage, radishes, and a simple vinaigrette to balance the creamy filling. Pinto beans, black beans, or steamed corn make easy sides. Offer lime wedges, chopped cilantro, sliced jalapeños, or a spoonful of sour cream at the table so everyone can finish a portion to taste.
Variations
For extra heat, use hot Rotel or add one minced jalapeño with the onion and bell pepper. For a milder casserole, choose mild diced tomatoes with green chiles and use a little less chili powder. You can replace the chicken with an equal amount of cooked turkey, or use drained black beans and sautéed zucchini for a meatless version. Pepper Jack can replace some or all of the Monterey Jack for more spice. Flour tortillas also work, though they tend to become softer than corn tortillas; use the same quantity and avoid making the layers too thick.
Storage and Reheating
Store cooled leftovers in an airtight container in the refrigerator for 3 to 4 days. Reheat individual portions in the microwave, covered loosely, until steaming hot throughout and at least 165°F, stirring or turning the portion partway through if needed. To reheat a larger amount, cover the baking dish with foil and warm it in a 325°F oven until the center reaches 165°F; timing depends on portion size, so check after about 20 minutes. Add a tablespoon or two of broth if the edges look dry. Do not leave the casserole at room temperature for more than 2 hours, and reheat only the portion you plan to eat.
To freeze, assemble the casserole without baking, wrap it tightly, and freeze for up to 2 months for best quality. Thaw overnight in the refrigerator, then bake at 350°F until hot in the center, adding time as needed and checking for 165°F. The tortillas may soften after freezing. You can also freeze baked portions in airtight containers for up to 2 months; thaw in the refrigerator before reheating.
Frequently Asked Questions
Is this the original King Ranch casserole recipe?
There is no single officially documented original recipe. The dish is a Texas home-cooking classic, and versions commonly combine chicken, tortillas, cheese, tomatoes with green chiles, and a creamy sauce. This recipe keeps those familiar elements while making the sauce from scratch.
Can I use cream of chicken soup instead of the homemade sauce?
Yes. For a shortcut, omit the butter, flour, broth, and milk, and mix two 10.5-ounce cans of condensed cream of chicken soup with the seasonings and Rotel. The result will be thicker and saltier, so taste before adding the listed salt and use a splash of broth if the mixture needs loosening.
Do I need to cook the tortillas first?
No. The tortillas go into the dish uncooked and soften as they bake. If they seem especially dry or stiff, briefly warm them in a dry skillet or microwave under a damp paper towel so they are easier to layer.
Can I assemble the casserole ahead?
Yes. Assemble it, cover, and refrigerate for up to 24 hours before baking. Let the chilled dish sit at room temperature while the oven heats, but do not leave it out for more than 2 hours. It may need an extra 5 to 10 minutes in the oven; verify the center reaches 165°F.
Can I make it less spicy?
Most standard Rotel has a mild to moderate chile kick. Choose a mild version, drain it well, and avoid added jalapeño. The cheese and creamy sauce also mellow the heat.
Why is my casserole watery?
Excess tomato liquid, very wet chicken, or adding too much reserved Rotel juice can loosen the filling. Drain the tomatoes lightly, use well-drained cooked chicken, and let the baked casserole rest for 10 minutes before cutting so the sauce can thicken.