This Instant Pot Vegan Cauliflower Soup is a creamy and comforting dish perfect for chilly days. It's quick to make, thanks to the Instant Pot, and packed with flavors from cauliflower, onion, and garlic. The addition of coconut milk gives it a rich texture without any dairy, making it a great option for vegans and those with lactose intolerance.
If you're not familiar with full-fat coconut milk, it's a creamy, dairy-free alternative that adds richness to the soup. You can find it in the international or health food aisle of most supermarkets. Make sure to get the full-fat version for the best texture. Vegetable broth is another key ingredient, and while you can make it at home, store-bought versions work just as well. Look for low-sodium options to control the saltiness of your soup.

Ingredients For Instant Pot Vegan Cauliflower Soup
Cauliflower: The star of the soup, providing a mild flavor and creamy texture when blended.
Onion: Adds a sweet and savory base to the soup.
Garlic: Enhances the flavor with its aromatic and pungent notes.
Vegetable broth: The liquid base that cooks the vegetables and adds depth to the soup.
Full-fat coconut milk: Adds creaminess and a subtle coconut flavor, making the soup rich without dairy.
Salt: Enhances the overall flavor of the soup.
Freshly ground black pepper: Adds a hint of spice and complexity to the soup.
Technique Tip for Making Vegan Cauliflower Soup
When sautéing the onion and garlic in the Instant Pot, make sure to use a splash of vegetable broth instead of oil to keep the recipe vegan and lower in fat. This method not only softens the vegetables but also adds an extra layer of flavor to the base of your soup.
Suggested Side Dishes
Alternative Ingredients
cauliflower - Substitute with broccoli: Broccoli has a similar texture and can provide a slightly different but still delicious flavor.
onion - Substitute with leeks: Leeks offer a milder, sweeter taste that can complement the soup well.
garlic - Substitute with shallots: Shallots have a subtle garlic flavor and can add a delicate sweetness to the soup.
vegetable broth - Substitute with mushroom broth: Mushroom broth provides a rich, umami flavor that can enhance the depth of the soup.
full-fat coconut milk - Substitute with cashew cream: Cashew cream is creamy and rich, making it a great dairy-free alternative.
salt - Substitute with soy sauce: Soy sauce can add a salty and umami flavor, but use sparingly to avoid overpowering the soup.
freshly ground black pepper - Substitute with white pepper: White pepper has a milder flavor and can provide a subtle heat without altering the soup's color.
Alternative Recipes Similar to This Vegan Cauliflower Soup
How to Store and Freeze This Soup
Allow the cauliflower soup to cool to room temperature before storing. This helps prevent condensation, which can dilute the soup and affect its texture.
Transfer the soup into airtight containers. For easy portion control, consider using individual serving-sized containers. This makes reheating a breeze and ensures you only thaw what you need.
Label the containers with the date. This is especially helpful if you plan to store multiple batches of soup or other meals in your fridge or freezer.
Store the soup in the refrigerator if you plan to consume it within 3-4 days. The vegetable broth and coconut milk base will keep well for this duration.
For longer storage, place the airtight containers in the freezer. The soup can be frozen for up to 3 months without losing its flavor or texture.
When ready to eat, thaw the soup in the refrigerator overnight. This gradual thawing helps maintain the soup's creamy consistency.
Reheat the soup on the stovetop over medium heat, stirring occasionally. If the soup appears too thick after reheating, add a splash of vegetable broth or coconut milk to reach your desired consistency.
Alternatively, you can reheat individual portions in the microwave. Use a microwave-safe container, cover loosely to allow steam to escape, and heat in 1-minute intervals, stirring in between, until hot.
If you notice any separation after thawing, a quick blend with an immersion blender or a vigorous stir will bring the cauliflower soup back to its creamy state.
Enjoy your reheated vegan cauliflower soup with a sprinkle of freshly ground black pepper or a drizzle of olive oil for an added touch of flavor.
How to Reheat Leftovers
For stovetop reheating:
- Pour the leftover soup into a saucepan.
- Heat over medium-low, stirring occasionally to ensure even heating.
- Once the soup is hot and steaming, it's ready to serve.
For microwave reheating:
- Transfer the soup to a microwave-safe bowl.
- Cover the bowl with a microwave-safe lid or a plate to prevent splatters.
- Heat on high for 2-3 minutes, stirring halfway through.
- Check the temperature and heat for an additional 1-2 minutes if needed.
For instant pot reheating:
- Pour the leftover soup back into the instant pot.
- Set the instant pot to the sauté mode.
- Stir occasionally until the soup is heated through, about 5-7 minutes.
For oven reheating:
- Preheat your oven to 350°F (175°C).
- Pour the soup into an oven-safe dish.
- Cover with aluminum foil to prevent drying out.
- Heat for 20-25 minutes, stirring halfway through to ensure even heating.
For slow cooker reheating:
- Transfer the leftover soup to your slow cooker.
- Set it to the low setting.
- Heat for 1-2 hours, stirring occasionally until the soup is hot.
Essential Tools for Making Vegan Cauliflower Soup
Instant Pot: This is the main cooking device used to sauté the vegetables and cook the soup under high pressure.
Blender: Used to blend the soup until smooth after cooking.
Knife: Essential for chopping the cauliflower and onion.
Cutting board: Provides a safe surface for chopping the vegetables.
Measuring cups: Used to measure the vegetable broth and coconut milk accurately.
Measuring spoons: Used to measure the salt and pepper.
Wooden spoon: Useful for stirring the ingredients while sautéing.
Ladle: Handy for serving the soup once it's ready.
How to Save Time on Making This Soup
Pre-chop ingredients: Chop the cauliflower, onion, and garlic in advance and store them in the fridge.
Use pre-made broth: Opt for store-bought vegetable broth to save time on making your own.
Quick release pressure: Utilize the quick release function on your Instant Pot to speed up the cooking process.
Blend directly in pot: Use an immersion blender to blend the soup directly in the pot, reducing cleanup time.

Instant Pot Vegan Cauliflower Soup Recipe
Ingredients
Main Ingredients
- 1 head Cauliflower chopped into florets
- 1 medium Onion chopped
- 3 cloves Garlic minced
- 4 cups Vegetable Broth
- 1 cup Coconut Milk full-fat
- 1 teaspoon Salt or to taste
- ½ teaspoon Black Pepper freshly ground
Instructions
- 1. Set the Instant Pot to sauté mode and add a splash of vegetable broth.
- 2. Add the chopped onion and garlic, sauté until softened, about 3-4 minutes.
- 3. Add the cauliflower florets, remaining vegetable broth, salt, and pepper.
- 4. Close the lid and set the Instant Pot to manual high pressure for 10 minutes.
- 5. Once the cooking time is up, do a quick release of the pressure.
- 6. Open the lid and add the coconut milk. Use a blender to blend the soup until smooth.
- 7. Adjust seasoning if needed and serve hot.
Nutritional Value
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