Pre-heat your oven to 400 F. Line a baking sheet with parchment paper or aluminum foil.
Peel the skin off your tomatillos and onions. Cut the tips off the jalapenos. Cut the jalapenos in half and de-seed. (Leave seeds in if you want chili to be extra spicy.) Put them on the baking sheet and toss them in the oil and salt. Put in oven.
Once salsa vegetables are roasted, take out of oven and let them cool down a bit. Then add them to your food processor and blitz until you get a salsa-like consistency.
Add your 2 tbsp of oil to a pot with high sides on medium heat.
Dice up your potato into small pieces. Sautee in the oil along with the cumin and turmeric for a few minutes. Then add in your garlic (minced). Sautee for a few more minutes.
Add in your salsa. Then add in your vegetable broth. (I like to use the concentrated vegetable base and then add in water, but feel free to use whatever you have - bullion cube, quarts of veggie stock, chicken stock...etc. I'm using 1-2 quart as a general guideline, but add more or less depending on how thick you want your soup to be.)
Turn the temperature to high and cover the pot. Let the potatoes cook about half-way through and then add in your rice. (At this step the potatoes shouldn't be hard but they shouldn't be completely tender either.)
Now add in your beans (rinse and drained) and your corn. Stir and simmer for a few minutes.
Once the rice is fully cooked, your soup is done! Serve with cilantro, sour cream, and cheese.