- Carefully cut the squash in half and remove the seeds. Place on baking sheet and roast in a hot oven at 350 F until tender, about one hour.
- Roast corn in the oven and remove when kernels are brown around the edges. When the squash is tender (test by sticking it with a fork), remove from oven and scoop out the flesh when cool enough to handle.
- In a large pot, add diced onion and celery. Begin to sauté over medium heat for about 5 minutes. Add salt, black pepper, and thyme. Continue to cook for 2 minutes. Add vegetable broth, bring to a boil, and reduce to a simmer.
- Add roasted squash, continue to simmer until all vegetables are tender. Remove the pot from the stove.
- Process with a stick blender or transfer the mixture to a stand blender and run until very smooth. Return the pot to the stove and add diced potatoes, roasted corn, cayenne pepper, and lemon juice.
- Continue to simmer for 10 to 15 minutes, until potatoes are cooked and soup is hot. Taste and adjust seasonings.
Notes:
Any winter squash will work great for this soup.
If the soup is too thick, you can thin it with a little more vegetable broth.
Customize it by adding your favorite finishing touch like cooked lentils, cooked white beans, and/or coconut milk.
Photo by: Lucy Schaeffer for Food and Wine.
Watch former LEAP intern Heather Kashin prepares the soup in this video.