Preheat the Oven: Warm your oven to 400°F (200°C).
Prepare the Vegetables: Toss the potatoes, carrots, and whole garlic bulbs (with the tops trimmed off) in olive oil, salt, and pepper.
Roast with Foil: Spread the seasoned vegetables on a baking tray. Cover the tray with aluminum foil to ensure even roasting and to prevent the vegetables from getting too brown.
Uncover and Continue Roasting: After about 20 minutes, remove the foil and continue roasting for another 10-20 minutes, until the vegetables are tender and have a nice, golden color.
Blend the Soup: Allow the vegetables to cool a bit, then squeeze the garlic out of their skins. Blend the veggies with vegetable stock and coconut milk, and simmer. Season to taste.
Lemon Juice: Add lemon juice for a zesty flair.
Serve: Pour the soup into bowls, top with a swirl of chili oil.
