Creating this amazing King Ranch Chicken Mac and Cheese involves a few simple steps. Follow these instructions for delicious results:

1. Preheat Your Oven: Begin by preheating your oven to 350°F (175°C) to ensure it’s ready to bake when the dish is prepared.

2. Cook the Macaroni: In a large pot, bring salted water to a boil. Add the elbow macaroni and cook according to package instructions until al dente. Drain and set aside.

3. Prepare the Sauce: In a large mixing bowl, combine the cream of chicken soup, diced tomatoes (with their juice), milk, taco seasoning, garlic powder, onion powder, salt, and pepper.

4. Combine Chicken and Mix: Add the shredded cooked chicken to the sauce mixture, stirring until everything is well combined.

5. Add Macaroni and Cheese: Fold in the cooked macaroni to the chicken and sauce mixture, ensuring the pasta is fully coated.

6. Add Cheese: Stir in 1 cup of cheddar cheese and 1 cup of Monterey Jack cheese, mixing until melted and creamy.

7. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish, spreading it out evenly.

8. Top with Cheese: Sprinkle the remaining cheddar and Monterey Jack cheeses over the top for that irresistible cheesy crust.

9. Bake: Place the dish in the preheated oven and bake for approximately 25-30 minutes, or until the cheese is bubbly and golden brown.

10. Garnish and Serve: Allow to cool for a few minutes, then garnish with chopped green onions if desired. Serve warm and enjoy the flavors!