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Cheesy Vegan Cauliflower Potato Soup

Cheesy Vegan Cauliflower Potato Soup is a rich, creamy, dairy-free soup that delivers cozy comfort without any animal products. Made with roasted cauliflower, potatoes, garlic, rosemary, and nutritional yeast, this plant-based soup has a naturally cheesy flavor and velvety texture that’s both satisfying and nourishing. Perfect for cold days, healthy dinners, or meal prep, this vegan soup is hearty, wholesome, and incredibly flavorful.
Prep Time15 minutes
Cook Time45 minutes
Total Time1 hour
Servings: 6

Ingredients

Soup Base

  • 1 bulb garlic
  • ½ head cauliflower cut into small florets
  • 2 potatoes peeled and chopped
  • 2 –3 sprigs rosemary
  • ⅓ cup chopped red onion divided
  • 2 –3 tablespoons olive oil
  • 2 cups vegetable stock
  • 3 tablespoons nutritional yeast
  • ½ teaspoon prepared mustard
  • Salt and black pepper to taste

Optional Add-Ins & Garnish

  • Almond milk to thin soup if needed
  • Fresh chives for garnish
  • Reserved roasted vegetables for topping

Instructions

  • Preheat oven to 425°F and line a baking sheet with parchment paper.
  • Prepare the garlic by removing outer skins, trimming the top to expose cloves, and keeping the bulb intact.
  • Add garlic, cauliflower, potatoes, rosemary, and half of the chopped onion to the baking sheet; season with salt and pepper and drizzle with 1–2 tablespoons olive oil.
  • Rub oil over the garlic, cover it loosely with foil, and roast for 30 minutes until vegetables are tender and lightly browned.
  • Let garlic cool slightly, then squeeze the softened cloves from their skins.
  • Optional: Reserve ½ cup roasted vegetables for topping.
  • Heat remaining olive oil in a large saucepan and sauté remaining onion until tender, about 3 minutes.
  • Add roasted vegetables, garlic, rosemary leaves, and vegetable stock; bring to a boil.
  • Reduce heat, cover, and simmer for 10–15 minutes until vegetables are very soft.
  • Cool slightly, then blend soup in batches until smooth.
  • Return soup to pot and whisk in nutritional yeast and mustard.
  • Thin with almond milk or water if desired, adjust seasoning, and heat through.
  • Serve topped with chives and reserved roasted vegetables.

Notes

Make It Extra Creamy

  • Add a splash of almond milk or oat milk when blending

Flavor Boost

  • Add a pinch of smoked paprika or white pepper

Storage

  • Refrigerate up to 4 days
  • Freeze up to 2 months

Serving Ideas

  • Serve with crusty bread or vegan garlic toast
  • Pair with a fresh green salad