Roasted Cauliflower Soup with Garlic and Parmesan

This roasted cauliflower soup is creamy, packed with vegetables, and deeply satisfying — the perfect bowl for chilly weather.

If you enjoy hearty soups, try these favorites: My viral Crockpot Potato Soup, Vegetarian French Onion Soup, Vegan Minestrone Soup, and Roasted Acorn Squash Soup.

This roasted cauliflower soup highlights the natural sweetness and nuttiness of cauliflower. It’s a veggie-forward, comforting recipe that comes together easily and makes excellent leftovers. Think of it as a lighter, veggie-rich cousin to a beer cheese soup — no beer, but all the comfort.

I love creamy vegetable soups because they let you hide extra veggies in a meal without anyone noticing, and they’re ideal for soup season. This version uses roasted cauliflower and whole roasted garlic for depth and a mellow, caramelized flavor.

Ingredients we’re working with:

• Large head of cauliflower. The main ingredient — it purees into a silky base with a rich texture.
• Whole head of garlic. Roasting mellows the garlic and adds a subtle, savory sweetness.
• Carrots. Bring natural sweetness and color.
• Celery. Adds freshness and aromatics to the base.
• Onion. Sautéed until soft to deepen the soup’s savory flavor.
• Smoked paprika. Gives a warm, smoky note that complements the roasted vegetables.
• Broth. Vegetable broth blends the flavors and controls the soup’s consistency.
• Milk. For creaminess — use your preferred milk, or swap for heavy cream for a richer result.
• Garnish. Fresh thyme, chives, or green onion brighten the finished soup.

If you want a heartier soup, adding potato would be a great option — roast it with the cauliflower for extra substance.

How to make the soup

1. Roast the garlic. Preheat oven to 400°F. Cut the top off the garlic head to expose the cloves, drizzle with 1 tsp olive oil, wrap in foil, and roast for 55–65 minutes until soft and browned. Let cool enough to handle.
2. Roast the cauliflower. Toss cauliflower florets with 1 Tbsp olive oil, salt, and pepper. Spread on a baking sheet and roast 30 minutes, flipping once, until golden at the edges.
3. Sauté the aromatics. Meanwhile, heat the remaining olive oil in a large pot over medium heat. Add the diced onion and cook 5 minutes, then add chopped carrots and celery and cook 3 minutes more. Stir in smoked paprika and a pinch of salt.
4. Simmer with broth. Pour in the vegetable broth, add the roasted cauliflower and squeeze the roasted garlic cloves from their skins into the pot. Bring to a simmer and cook about 10 minutes, stirring occasionally.
5. Blend until smooth. Add milk, then blend the soup until silky using an immersion blender or in batches in a regular blender. Be careful blending hot liquids and hold the lid with a towel if needed.
6. Finish and serve. Return the blended soup to the pot, warm gently for a few minutes, and stir in optional lemon juice if using. Adjust seasoning with salt, pepper, or a touch more smoked paprika. Garnish with fresh herbs or toasted seeds for texture.

Helpful tips

• Adjust the thickness. Use less broth for a thicker soup or add more broth for a thinner consistency. Start conservatively and adjust after blending.
• Blend with care. If using a regular blender, work in small batches and hold the lid with a towel to prevent splatters when blending hot liquid.
• Season at the end. Taste after blending and add salt, pepper, and a squeeze of lemon juice or an extra pinch of smoked paprika to brighten the flavors.
• Add texture. Garnish with fresh herbs, chives, or toasted seeds or nuts for contrast against the creamy soup.

Frequently asked questions

More simple soup recipes to love

• Butternut Squash Soup
• White Bean & Kale Soup
• Coconut Tofu Soup
• Chickpea Noodle Soup
• Vegan Corn Chowder
• Vegan Lentil Soup
• Vegan Stew