Creating Buffalo Chicken Cauliflower Casserole is simple if you follow these well-structured steps:

1. Preheat the Oven: Start by preheating your oven to 350°F (175°C).
2. Prepare Cauliflower: Boil the cauliflower florets in a large pot of salted water for about 5-7 minutes until tender. Drain and set aside.
3. Mix Chicken and Sauce: In a large bowl, combine the shredded chicken with buffalo sauce, ranch dressing, garlic powder, onion powder, salt, and black pepper.
4. Incorporate Cauliflower: Add the drained cauliflower florets to the chicken mixture and mix well until everything is coated evenly.
5. Add Cream Cheese: In a separate bowl, blend the softened cream cheese with half of the shredded cheddar cheese until smooth. This will create a creamy layer.
6. Combine Mixtures: Gently fold the creamy mixture into the buffalo chicken and cauliflower mix. Ensure everything is well combined.
7. Transfer to Baking Dish: Pour the entire mixture into a greased 9×13-inch baking dish. Spread it evenly using a spatula.
8. Top with Cheese: Sprinkle the remaining shredded cheddar cheese on top of the casserole. If you like, add more for an extra cheesy layer.
9. Bake: Place the baking dish in the preheated oven and bake for 30-35 minutes or until the cheese is bubbling and golden brown.
10. Garnish: Once done, remove from the oven and sprinkle chopped green onions on top for added flavor and color.
11. Cool Slightly: Allow the casserole to cool for about 5 minutes before serving.

With these steps, you will create an incredible Buffalo Chicken Cauliflower Casserole that is bound to be a hit!