01 -
Gather all ingredients and preheat the oven to 350°F (175°C).
02 -
Bring water to a boil in a medium saucepan. Stir in rice, cover, and remove from heat. Let stand for 5 minutes.
03 -
In a 9x13-inch baking dish, combine the prepared rice, chicken, broccoli, processed cheese, mushroom soup, chicken soup, milk, butter, and onion.
04 -
Bake in the preheated oven for 30 to 35 minutes, stirring halfway through to ensure the cheese melts evenly.