Transfer sweet potatoes, butternut squash, green apple, onion, and garlic cloves to a large baking tray.
You can line the baking tray with aluminum foil for easy clean-up.
Drizzle with 2 tablespoons of extra virgin olive oil and sprinkle salt over the veggies.
Keep the baking tray in the middle rack of the oven and roast the veggies for 35 minutes or longer, until the orange flesh is easily pierced through with a fork.
Remove the tray from the oven and let the veggies cool down for some time.
Blend The Roasted Veggies
Transfer the roasted veggies to a blender or a food processor along with 1 cup of water and blend to make a smooth paste.
Make The Soup
Heat the remaining 2 tablespoons of extra virgin olive oil in a large pot over medium heat.
Add the puree to the pot along with the vegetable broth, ground cloves, ground nutmeg, cayenne pepper, and black pepper powder, and stir well.
Bring the soup to a boil and then reduce the heat to low. Add some water if the soup is thick for your liking. Adjust salt and pepper and cook for 4-5 minutes, stirring frequently.
Transfer the soup to serving bowls. Garnish with toasted pepitas and a sprinkle of cayenne pepper and serve hot.
Video
Notes
You can replace the vegetable broth with chicken broth.Add a little unsweetened heavy cream or coconut milk for a taste change.You can also top the soup with a drizzle of heavy cream, chopped herbs like parsley, tarragon, sage, or basil, toasted and chopped walnuts or pecans, croutons, or roasted mushrooms.