Cheesy Chicken with velveeta

2 pounds broccoli florets and cooked 4 cups rice cooked 1/4 cup butter or substitute 1 large onion chopped 2 cups celery chopped, one bunch 1 pound mushrooms[...]

1/2 cup chopped onion 1 garlic clove , minced 1 tablespoon oil 2 cups chopped cooked chicken 1 (4 ounce) can chopped green chilies 1/4 cup chicken broth 2[...]