Easiest Broccoli Rice Casserole - cooking recipe

Ingredients

1 1/2 cups cooked white rice (Minute Rice)
1 (16 ounce) package frozen broccoli, pieces (thawed)
1/2 red onion, chopped
1 (8 ounce) jar Cheese Whiz
1 (14 ounce) can cream of mushroom soup (Campbell's)
1 (6 ounce) can sliced button mushrooms
1/2 cup butter, sliced and softened (1 stick)
1 cup shredded cheddar cheese

Preparation

Mix all ingredients except shredded cheddar cheese in a 2 quart casserole dish.
Bake in a preheated 350 degree oven for 35-40 minutes.
Take out and stir.
Sprinkle shredded cheese on top and bake for an additional 10 minutes.