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Vegan Roasted Garlic Cauliflower Soup
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4.5 from 8 votes

Vegan Roasted Garlic Cauliflower Soup

This vegan roasted garlic cauliflower soup is creamy, silky smooth, and oh-so-soothing. It requires just 15 minutes or so of active kitchen prep, and comes together rather effortlessly. Cauliflower and garlic are dry roasted until golden-brown, simmered in broth until tender, and blended until super smooth and creamy. 
Prep Time15 mins
Cook Time50 mins
Total Time1 hr 5 mins
Course: Bisque, Soup
Cuisine: Gluten-Free, Grain-Free, plant-based, Vegan
Servings: 6
Author: Ashley


  • 2 large heads cauliflower, cored and cut into small florets
  • 1 to 2 heads of garlic cloves, separated, smashed, and peeled (depending on how garlicky you prefer your soup)
  • 2 tablespoons extra-virgin olive oil, plus more for finishing
  • 1 medium white onion, diced
  • Small handful fresh thyme sprigs (tied with kitchen twine if the twigs are fine)
  • 4 cups low-sodium vegetable broth or filtered water
  • 2 cups unsweetened plain almond milk*
  • 2 tablespoons nutritional yeast flakes
  • 1 tablespoon apple cider vinegar
  • 1 ½ to 2 ½ teaspoons sea salt or to taste
  • Freshly ground black pepper, to taste


  • Preheat the oven to 425F. Line a large baking tray with parchment paper.
  • Spread the cauliflower florets and garlic cloves out over the lined baking tray.
  • Dry roast the cauliflower and garlic for 30 to 40 minutes, or until the cauliflower is flecked with a rich golden-brown hue.
  • Meanwhile, about 10 minutes before the cauliflower is ready, heat the olive oil in a large stockpot or dutch oven over medium-low heat. Add the onion and thyme sprigs and sauté for 5 to 7 minutes, or until the onion is soft and translucent, stirring occasionally.
  • Once the cauliflower and garlic have finished roasting, add them to the stock pot along with the vegetable broth. Increase the heat to medium-high and bring the mixture to a boil. Then, reduce the heat, cover, and simmer for 15 minutes.
  • Turn off the heat, and carefully remove the thyme sprigs. Use an immersion blender to purée the soup. It will take about 5 minutes or more to get the soup completely smooth, so just keep blending until the texture reaches the desired consistency.
  • Stir in the almond milk, nutritional yeast, apple cider vinegar, sea salt, and black pepper. Use the immersion blender to briefly blend again. Then, taste and adjust seasoning, adding more sea salt and black pepper if desired.
  • Ladle the soup into bowls and serve warm with a drizzle of olive oil, if desired.


*Ensure that your almond milk is plain, unsweetened, and free from "natural flavors". Some brands of almond milk (e.g., Califia) add "natural flavors" to their plain/unsweetened almond milk that, to me, impart an undesirable sweetness in savory dishes that's difficult to overcome even with added salt and seasonings.