Add the broth, sweet potato, uncooked quinoa, black beans and tomatoes to the slow cooker. Stir to combine.
Next add the peppers, carrot, onion and garlic, and stir, then add the rest of the seasonings and stir a few times to combine.
Set the slow cooker to high for 2- 2 1/2 hours or on low for 5-6 hours (for high, monitor the last 30 minutes and for low, monitor the last hour).
Vegan Cashew Sour Cream
Blend all the ingredients for cashew sour cream in a high speed blender (I use a NutriBullet) until smooth, for about 30 seconds, scraping blender once halfway in between.
Serve on chili with your favourite toppings (avocado, chopped green onions).
Notes
To store: Leftover sweet potato and black bean chili can be stored in an airtight container in the refrigerator for up to 5 days. Reheat in a pan on the stovetop or in the microwave.To freeze: Freeze this chili in an airtight container or freezer bag for up to 3 months. Thaw in the refrigerator before reheating according to the instructions above.