Every once in a while a good casserole on Sundays is just what you need. My family loved this Chicken, Mushroom, Broccoli, and Rice Casserole - a home-cooked meal that is a little of everything.
Preheat oven to 350 degrees. Prepare rice per instructions.
Steam broccoli until fork tender.
In a heated pan add 1/2 tablespoon oil and cook mushrooms until golden brown. Season with salt and pepper and remove from pan. Add the other 1/2 tbsp of oil to the pan and cook onions and celery until soft.
In a large bowl, combine all ingredients and mix well.
Put into a baking dish and heat uncovered for 30 minutes. Let cool for a few minutes prior to serving.
Notes
Grocery stores often sell broccoli in steamable bags which makes things easier. Source: adapted from For The Love of Cooking