To a 6-quart or large Instant Pot, add the olive oil. Turn to SAUTE and let the oil heat. Once the oil is hot, add the onion and cook until beginning to soften, about 3 minutes. Add the sweet potatoes, bell pepper, garlic, chili powder, chipotle chili powder, cumin, and kosher salt. Cook for 1 to 2 additional minutes, until the garlic is fragrant.
Add half of the vegetable broth and stir, scraping up any stuck-on bits of food (this will prevent a burn warning). Stir in the remaining broth and the quinoa. Pour the tomato sauce on top (do not stir again).
Turn the Instant Pot to OFF. Stir in the black beans, kidney beans, and sugar. Place the lid back on top and let stand 10 minutes to thicken. Uncover. Taste and adjust seasoning as desired. Serve hot, with any and all the toppings!
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