Countdown to Thanksgiving - Broccoli, Rice and Cheese Casserole

This dish is a staple on our Thanksgiving dinner table and to be honest it is so good I don't know why we only eat it once a year!
Ingredients:

2 c. minute rice, cooked
2 (8 oz.) jar cheese whiz
2 sticks of butter
3/4 c. onion, diced
2 pkg. frozen chopped broccoli, cooked and drained
2 cans cream of mushroom soup

Directions:

- In a medium skillet, saute onions in a tablespoon of the butter.
- In a large bowl combine all ingredients and mix thoroughly.
- Pour into a large casserole dish.
- Cover and bake at 350 degrees for 15-20 minutes.