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close up shot of creamy vegan mashed cauliflower

Vegan Cauliflower Mashed Potatoes with Caramelized Onions

  • Author: Mikyla
  • Prep Time: 10
  • Cook Time: 35
  • Total Time: 45 minutes
  • Yield: 5 servings 1x
  • Category: Holiday Side Dish
  • Diet: Vegan


The best dairy-free mashed cauliflower recipe you’ll ever try! Made with a dairy-free white cheddar sauce and caramelized onions! This vegan mashed cauliflower potato recipe will be a new family tradition! 


  • 1 head of cauliflower
  • 1/4 cup vegan butter
  • 3/4 tsp. yellow miso
  • 1/4 cup non-dairy milk 
  • 1 tbsp. nutritional yeast
  • 2 tbsp. garlic powder
  • 1/2 tsp. salt
  • 3/4 cup coconut milk
  • 1/4 cup vegan sour cream
  • 2 tbsp. chives
  • 1 large white onion
  • 1 tbsp. tapioca flour- optional*
  • 1 tsp. brown sugar
  • 1/8th tsp. black pepper
  • 6 cups water 
  • 2 cups of Hippeas vegan white cheddar puffs


  1. First, rinse the head of cauliflower and bring the water to a boil.
  2. Steam the cauliflower for about 20 minutes or until tender.
  3. While the cauliflower is cooking prepare the onions and vegan white cheddar sauce.
  4. Slice the onions and place two tablespoons of butter into a skillet. Add the brown sugar and melt. Then place the onions into the brown sugar butter mixture and cook until caramelized. 
  5. While the onions are cooking prepare the white cheddar sauce. 
  6. In a saucepan heat butter and coconut milk. Then add nutritional yeast, garlic powder, salt, pepper, and white miso. Stir and bring to a simmer. Then reduce the heat slightly and add in tapioca flour. Whisk the flour into the butter mixture until completely dissolved. The sauce will start to thicken! Then turn off the heat and allow it to cool slightly for the remainder of the time until the cauliflower is completely cooked.
  7. By now the cauliflower should be done cooking. Remove it from the pot of water and preheat the oven to 350. 
  8. Blend the Hippeas vegan white cheddar puffs into a powder and set aside. 
  9. Then place the cooked cauliflower head into the blender. Add the white cheddar sauce, sour cream, most of the caramelized onions except for a few for garnishing the finished plate with, and the non-dairy milk.
  10. Blend well until smooth and creamy adding additional water as needed one tablespoon at a time. 
  11. Pour the mashed cauliflower into a baking dish, top with white cheddar crumbs, and bake at 350 for 15 minutes. 
  12. Remove the dish from the oven, garnish with fresh chives, and some of the caramelized onions. 
  13. Enjoy!


* the tapioca flour helps to thicken the sauce but if you don’t have any you can use corn starch or omit it completely! 


  • Serving Size: 1 scoop
  • Calories: 150

Keywords: cauliflower, holiday, white cheddar, vegan thanksgiving, mashed cauliflower, garlic mashed cauliflower, healthy side dish,