1 (10.5 ounce) can condensed cream of mushroom soup
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6 ounces processed cheese sauce (such as Cheez Whiz®)
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1 cup uncooked instant rice (such as Minute®)
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1 cup water
Instructions
Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13-inch casserole dish.
Melt butter in a skillet over medium heat. Add onions and celery and saute until tender, about 10 minutes.
Chop broccoli florets into smaller pieces and transfer to a large bowl. Add shredded chicken, condensed soup, cheese sauce, uncooked rice, water, and sauteed vegetables. Mix thoroughly and transfer to the prepared casserole dish.
Bake, uncovered, in the preheated oven for 1 hour.