Add the diced onion to a large pot with the 1/4 cup vegetable stock and cook on medium-high heat for 5 minutes, stirring to avoid any sticking to the bottom.
Add the garlic and cook for another 5 minutes, stirring to avoid any sticking to the bottom, adding a bit more stock or water if needed to prevent burning.
Add the remaining ingredients and mix thoroughly, bring it to a boil, then reduce to a medium heat and simmer with the lid on for 30 minutes until it's thick, stirring occasionally to prevent any sticking to the bottom. Take it off the heat and let it cool in the pot for about 30 minutes, it'll also thicken a lot as it cools.
Serve over brown rice, quinoa, sweet potato, or whatever base you like, and add your favorite toppings - green or red onion, a drizzle of vegan yogurt, hot sauce, avocado, etc.
Store leftovers in the refrigerator.
