Cook rice. Bring to room temperature then refrigerate until cold. I like to use Minute Rice for this. Measure 3 dry cups then cook.
Preheat oven to 350 degrees.
Dice and cook onion in 2 tablespoons of olive oil until caramelized. Set aside.
To a large mixing bowl add rice, a shredded rotisserie chicken, cooked onion, salt, pepper, Velveeta, butter, steamed broccoli, and cream of chicken soup.
Mix well before pressing into a buttered 9x13 dish or pan.
Create crumbs with two sleeves of Ritz crackers in a gallon ziploc bag. Pour in melted butter and mix until all the crumbs are wet. Pour over the casserole and spread out.
Bake uncovered for 45 minutes.