Making Crack Chicken Casserole is simple! Just follow these easy steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Mix Ingredients: In a large mixing bowl, combine the cooked shredded chicken, softened cream cheese, ranch seasoning mix, sour cream, cream of chicken soup, and half of each cheese (cheddar and mozzarella).
3. Add Vegetables: If using, fold in the frozen mixed vegetables gently until everything is well combined.
4. Season: Add salt and pepper to taste, making sure to adjust based on preference.
5. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish, spreading it evenly.
6. Add Toppings: Sprinkle the remaining cheddar and mozzarella cheese on top, along with the crumbled bacon.
7. Bake: Place the casserole in the preheated oven and bake for 25-30 minutes, or until the cheese is bubbly and golden.
8. Garnish: Remove the casserole from the oven and let it cool for a few minutes. If desired, garnish with chopped green onions.
9. Serve: Scoop and serve in individual portions, and enjoy the amazing combination of flavors!

Following these steps will result in a memorable and appetizing Crack Chicken Casserole that your family will adore.