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Miso Butter Cauliflower Mash

Nisha Vora
Think of this as a healthier but equally decadent spin on mashed potatoes. It’s so creamy and rich that no one will ever know they’re eating cauliflower (unless you tell them, of course). This mash is great to have on hand as a side dish for your favorite protein or as a bed to serve underneath your main course, and will stay fresh in the fridge for four to five days.
5 from 2 votes
Prep Time 20 mins
Cook Time 10 mins
Total Time 30 mins
Course Side Dish
Cuisine American
Servings 4
Calories 159 kcal


  • 1 tablespoon olive oil
  • 2 leeks, cleaned, trimmed, and diced
  • 6 garlic cloves, chopped
  • 1 large head of cauliflower (2 1/2 – 3 pounds), cut into florets
  • 1 ¼ teaspoon kosher salt, divided + more to taste
  • Freshly cracked black pepper to taste
  • 1/2 cup low-sodium vegetable broth
  • 2 tablespoons vegan butter
  • 2 tablespoons white or yellow miso paste
  • 1 tablespoon nutritional yeast


  • Select the Sauté setting on the Instant Pot and after a few minutes, add the olive oil. Once the oil has heated up, add the leeks. Cook until starting to soften, 3-4 minutes. Add garlic and cook for 1 minute.
  • Add the cauliflower florets, thyme sprigs, 3/4 teaspoon of the kosher salt, and black pepper to taste. Pour the vegetable broth on top and stir.
  • Secure the lid and set the valve to Sealing (not Venting). Select the Pressure Cook setting (or Manual setting on older models) at high pressure and set the cook time to 4 minutes.
  • Once the 4-minute timer has completed and beeps, perform a quick pressure release by switching the valve from Sealing to Venting.
  • While the cauliflower is pressure cooking, make the miso butter. Combine the 2 tablespoons of miso paste with the 2 tablespoons of vegan butter in a small saucepan over low heat. Gently heat together and stir for 1-2 minutes until the ingredients are combined together.
  • Open the Instant Pot and add in the miso butter, nutritional yeast, and remaining ½ teaspoon kosher salt. Using an immersion blender, blend all of the ingredients together until you have a smooth texture. Alternatively, transfer all of the ingredients to a food processor and blend until smooth. Taste for salt and adjust accordingly.