Preparation and Cooking

• Preheat the oven to 350 degrees F. Melt the butter in a medium skillet over medium heat. Stir in the onions and cook for four to five minutes. Stir in the garlic and cook for one minute. Remove from the heat.
• Combine the soup, cheese, sour cream, and taco seasoning in a large mixing bowl. Mix well.
• Add the chopped chicken, green chiles, Rotel tomatoes, black beans, onions, corn, and garlic to the mixing bowl. Stir until well combined.
• Crush the Doritos into medium-sized pieces by hand in a bag. Do not let the pieces become too small.
• Put half of the crushed Doritos in a 9x13 baking dish, then pour the chicken mixture over it evenly.
• Put the dish in the oven and bake for about 20 minutes. Remove the casserole from the oven. Top with the remaining Doritos, followed by the cheese.
• Bake for five more minutes, or until the cheese has melted.
• Top each serving of casserole with a sour cream dollop and sprinkle with chopped parsley, if desired.