Creamy Cauliflower and Celery Root Soup with Roasted Shiitakes Author: Aysegul Sanford Prep time: 20 mins Cook time: 30 mins Total time: 50 mins Serves: 6 cups Ingredients 2 large garlic bulbs, roasted (get the recipe from the link in notes) 2 + 1 tablespoons olive oil, divided 1 medium onion, chopped 1 medium-size head