01 -
Set your oven to 425°F (220°C) and let it warm up.
02 -
Chop the shallots and peel the sweet potatoes into 1-inch cubes.
03 -
Toss the sweet potatoes and shallots on a baking tray with some olive oil. Sprinkle on thyme and cumin, mixing to coat everything evenly.
04 -
Place the prepared veggies in the oven and roast them for about 30 minutes. They should be soft and caramelized when done.
05 -
Take the roasted veggies out and let them rest for a bit. Then move them to a blender or food processor.
06 -
Pour 4 cups of broth into the blender, along with some salt and pepper.
07 -
Blend everything together until the texture is smooth and silky. If your blender's small, you might have to do it in parts.
08 -
Too thick? Splash in extra broth. Too thin? Simmer it gently till it's just right. Taste and tweak the seasoning if needed.
09 -
Serve up the warm soup and, if you'd like, add a swirl of sour cream on top.
10 -
Scatter on some chives or fresh herbs for a nice finishing touch.