Cheesy Broccoli and Rice Casserole

INGREDIENTS:
1 onion, chopped (I only used half)
1 celery stick, chopped
1/2 stick butter
11 oz pack of chopped broccoli
2 1/2 cups cooked rice
1 can cream of chicken soup
4 oz of velveeta, cubed and melted (I used 8 oz)
dash of tobasco
pepper, to taste

DIRECTIONS:

1. preheat oven to 350 degrees
2. saute onion and celery in butter
3. combine with remaining ingredients and mix well
4. pour into 2 quart baking dish
5. bake at 350 degrees for 45 minutes or until bubbly