On low to medium heat, melt the vegan butter and sauté the onion, garlic, and dry spices for 2-3 minutes or until the onions turn translucent. (Add the garlic in the next step if you prefer.)
Add the chopped carrots, celery, bell peppers, and jalapeño. Heat for 2-3 minutes, stirring occasionally.
Add the diced tomatoes, beans, and chili garlic sauce. Heat, stir, and cover the pan. Turn the hear to the lowest setting and simmer for 10 minutes.
While the chili simmers, heat oil in a separate pan and sauté the cauliflower florets, turning after a few minutes. When brown, turn heat off.
Add the cauliflower and tahini to the chili, stir, and turn off the heat.
Serve over rice, quinoa, pasta, or by itself. Top with anything you'd like!