My personal recipe for easy one-pot chili. Ever since Impossible Burger became available at Safeway, I've started making all vegan chili all the time. It's just easier in case we have guests over who don't want to eat meat.
Chop the onion, I normally just do a quick medium to large dice
In a dutch oven or stock pot, saute the onion over medium-low heat with some olive oil, salting the onion a bit to sweat it
Once the onion has turned translucent, add the Impossible burger, and turn the heat up to medium, stirring often with a wooden spoon to break up the bits of burger and get them browned all over
Dump in your tomatoes, beans, veggies, and jalapeƱos or other chiles at this point
Add however much chili powder tastes correct to you. I also like to add cumin at this time and add salt as needed
Turn the heat to low, cover the pot with a lid, and simmer for at least 10-15 minutes, but you could probably let it go for longer. Stir occasionally
Serve on its own or maybe with some cornbread