Roasted Celeriac Soup Recipe

Ingredients

• 2 pounds celeriac (celery root), peeled and cubed
• 2 medium carrots, peeled and cubed
• 1 medium onion, cut into 1-inch pieces
• 3 cloves garlic, peeled
• 1 teaspoon herbes de Provence
• 1 teaspoon salt
• 0.25 teaspoon freshly ground black pepper
• 5 cups chicken broth, divided
• 0.25 cup olive oil
• 0.33 cup heavy cream
• 6 teaspoons truffle oil, or to taste
• 2 green onions, thinly sliced