Heat the oil in a large pot over medium heat. Add the onion and a pinch of salt and pepper and cook until soft, 5 to 8 minutes. Stir in the garlic, carrots, poblano, butternut squash, and another pinch of salt and pepper. Cook until the vegetables just start to become tender and the onion is lightly browned, about 15 minutes. Reduce the heat if necessary.Add the chili powder, chipotle powder, and tomatoes and cook for 1 minute. Stir in the apple cider vinegar and black beans and then add 2 cups of vegetable broth (or enough to cover everything). Simmer until the butternut squash and carrots are tender, 20 to 30 minutes, adding more broth as needed.Add a big squeeze of lime. Season to taste with more salt, pepper, and spices to your liking. If your chili is too spicy, stir in a small splash of apple cider vinegar. If it's too thick, add another cup of broth.Serve with grilled corn, cilantro, tortilla strips, lime slices, and poblano cashew cream.