A bubbling casserole of chicken, rice, and melted cheese that kids and adults fight over equally. High calorie comfort food that's as easy to make as it is to eat.
Preheat your oven to 375°F (190°C) and grease a 9x13-inch baking dish for even browning.
Melt the butter in a large skillet over medium heat, and add the onion powder and garlic powder for 1 minute until fragrant.
Add the diced cooked chicken, cooked rice, frozen peas and carrots, kosher salt, and black pepper. Stir everything until well mixed and heated for 4-5 minutes.
Turn off the heat and gently fold in the sour cream and milk, then stir in 1 1/2 cups of the shredded cheddar cheese to create a creamy base.
Transfer the mixture into the prepared baking dish, spread evenly, and sprinkle the remaining 1/2 cup of cheddar cheese on top.
Bake, uncovered, for 25-30 minutes until the cheese is melted, bubbly, and starting to brown at the edges. Allow the casserole to rest for 5 minutes before serving for the best texture.