Creating Easy Buffalo Chicken & Roasted Potatoes Casserole can be straightforward if you follow these steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C).
2. Prepare Potatoes: In a large bowl, toss the diced potatoes with olive oil, garlic powder, onion powder, smoked paprika, salt, and black pepper.
3. Roast Potatoes: Spread the potatoes evenly on a baking sheet. Roast in the preheated oven for about 25-30 minutes or until golden and tender, flipping halfway through.
4. Mix Chicken Ingredients: While the potatoes are roasting, combine shredded chicken, buffalo sauce, cream cheese, and diced onion in another large bowl until well mixed.
5. Combine Mixtures: Once the potatoes are roasted, add them to the chicken mixture and stir gently to combine, ensuring the potatoes are well coated in the sauce.
6. Prepare Casserole Dish: Grease a large casserole dish with non-stick spray or olive oil.
7. Layer the Casserole: Pour the buffalo chicken and potato mixture into the prepared dish, spreading it evenly.
8. Add Cheese: Sprinkle the shredded cheddar cheese evenly over the top.
9. Bake: Place the casserole in the oven and bake for an additional 20-25 minutes or until the cheese is bubbling and golden.
10. Cool Slightly: Remove from the oven and let sit for 5-10 minutes before serving.

These simple steps will guide you in creating an incredible casserole that everyone will love!