I wanted to use some leftover veggies and cheese, so I decided to try this recipe. I made a few changes; I substituted the zucchini and mushrooms with corn, peas and tomato. Also used vegetable broth instead of chicken. It is a bit light on the seasoning. Next time I will add more salt. This is vegetarian and gluten free. It can turn into a vegan salad without the cheese.
http://www.thestayathomechef.com/2013/01/brown-rice-and-black-bean-casserole.html