Creating the Best Ever Chicken and Rice Casserole is both straightforward and rewarding. Follow these steps for success:

1. Preheat the oven to 350°F (175°C).
2. Sauté the onion and garlic: Heat olive oil in a skillet over medium heat. Add chopped onion and minced garlic. Cook until softened.
3. Combine the chicken and seasonings: Add diced chicken to the skillet. Sprinkle with paprika, salt, and pepper. Cook until chicken is no longer pink.
4. Mix the ingredients: In a large mixing bowl, combine the cooked chicken, sautéed onions and garlic, uncooked rice, chicken broth, cream of chicken soup, and frozen mixed vegetables. Stir well until everything is blended.
5. Transfer to a baking dish: Pour the mixture into a greased 9×13-inch baking dish.
6. Top with cheese: Sprinkle shredded cheddar cheese evenly over the top of the casserole.
7. Bake: Cover the dish with aluminum foil and bake for 40 minutes. Remove the foil and bake for an additional 10-15 minutes until the cheese is bubbly and golden.
8. Cool slightly: Remove the casserole from the oven and let it cool for 5-10 minutes before serving.
9. Garnish and serve: Optionally, sprinkle fresh parsley on top for an extra touch of color.

These steps ensure you create a delicious Best Ever Chicken and Rice Casserole that will impress your family with every bite!