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creamy cauliflower soup with, red chili flakes, and lemon zest

Best Instant Pot Cauliflower Soup Recipe

Shana Thomas
The best cauliflower soup recipe ready in just 7 minutes with the instant pot. It's vegan, creamy, and meal prep friendly.
Prep Time 10 mins
Cook Time 7 mins
Course Dinner,, Main Course
Cuisine American
Servings 6
Calories 250 kcal


  • 1 large head of cauliflower 
  • 1 cup raw cashews
  • 1 15 oz can of cannellini beans drained and rinsed
  • 4 cups low-sodium vegetable broth
  • 8 thyme sprigs fresh or dried
  • 1 rosemary fresh or dried
  • 4 garlic cloves roughly chopped
  • 1 bay leaf
  • 5 tbsp nutritional yeast
  • 1.5 tsp sea salt plus more to taste
  • black pepper to taste
  • 1 med potato of your choice


  • Cut the head of cauliflower into florets and roughly chop the garlic.
  • Add ingredients into the Instant Pot: garlic, cauliflower florets, cashews, vegetable broth, potatoes, cannellini beans, thyme, rosemary, bay leaf, nutritional yeast, 1.5 teaspoons of sea salt, and black pepper. Stir to combine the mixture. 
  • Close the Instant Pot lid and set the Pressure Release to Sealing. Select the Pressure Cook setting and set it to high pressure for 7 minutes.
  • Once the 7-minutes have completed and beeps, perform a quick pressure release by switching the Pressure Release knob from Sealing to Venting.
  • Open the pot and remove any herb sprigs. Use an immersion blender  to puree the soup until it's thick and creamy. Alternatively, if you want a super-smooth texture, transfer the soup to a stand blender and blend until smooth (replace the center cap from the blender lid and cover with a dishtowel to allow the steam to escape).
  • Taste and adjust seasoning accordingly. (I'll add a bit more sea salt at this stage).
  • Once ready to serve, pour the soup into bowls. Optional: Before serving, zest some lemon over the soup, squeeze some lemon juice over the soup, as well. Add as many red pepper flakes as you like, and drizzle with a bit of olive oil. Serve with salad and bread, if desired. 
Keyword cauliflower soup recipe, instant pot soup recipe, plant-based soup