Add the drained black beans, sweet potato, vegetables, sweet corn, and rice to a large casserole dish.
Add the seasonings and mix them in.
Pour over the chopped tomatoes and vegetable broth, and stir everything together.
Cover the casserole dish with foil and bake at 200C | 395F for 60 - 70 minutes, until the rice has absorbed the broth and the potatoes are tender.
Scatter over the diced avocado, sliced jalapenos, cilantro, and sour cream and serve while hot!
