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This Roasted Cauliflower Soup combines simple ingredients roasted to bring out deep, nutty flavors. Instead of cream, it uses white beans to create a velvety texture, making it a lighter yet satisfying soup. Topped with homemade croutons, it strikes a perfect balance between cozy and wholesome.
When I first made this, I was surprised by how rich and smooth it was without any dairy. My family loved it, and now it’s a goto on chilly nights.
Ingredients
- 1 head cauliflower: cut into small florets to ensure even roasting and tenderness
- 4 cloves garlic: with peel intact to roast gently and mellow the flavor
- 4 tablespoons olive oil: divided use extra virgin if possible for best taste
- 1/2 teaspoon coarse salt: to season and bring out natural sweetness
- 1/4 teaspoon pepper: for a hint of mild heat
- 1/2 teaspoon ground cumin: adds warmth and subtle earthiness
- 1/4 teaspoon ground paprika: gives a subtle smoky note
- 1 small yellow onion: chopped for a foundational savory element
- 2 tablespoons olive oil: for sautéing the onion to sweetness
- 1 can 398 ml white beans: navy or cannellini beans adds creaminess without dairy
- 6 cups vegetable stock: acts as the soup’s flavorful base
- 2 sprigs fresh thyme: for delicate herbal aroma
- Salt and pepper to taste: season to your liking
- Optional Homemade Croutons: 2 cups whole grain bread or bread of choice for a hearty contrast, 1 tablespoon olive oil to crisp the bread perfectly, 1 teaspoon dried thyme enhances the croutons with herbal notes, pinch of salt and pepper to season the croutons
Instructions
- Preheat the Oven:
- Set your oven to 450 degrees Fahrenheit. This high heat is needed to caramelize the cauliflower and garlic properly.
- Roast the Cauliflower and Garlic:
- Toss the cauliflower florets with 2 tablespoons of olive oil, salt, pepper, cumin, and paprika until all pieces are evenly coated. Spread out on a baking sheet in a single layer. Add the garlic cloves, unpeeled, to the tray so they roast gently. Roast for 15 minutes, then flip the cauliflower and continue roasting for another 10 minutes until the florets are tender with golden caramelized edges.
- Sauté the Onion:
- While the cauliflower roasts, heat 2 tablespoons of olive oil in a large pot over medium heat. Add the chopped onions and cook slowly until translucent and soft, about 5 to 7 minutes. This step builds a sweet flavor base for the soup.
- Add Beans and Stock:
- Stir in the drained beans, vegetable stock, thyme sprigs, and a pinch of salt and pepper. Bring the mixture to a gentle simmer then reduce heat to low. Let it simmer for 8 minutes to marry the flavors.
- Combine Cauliflower and Blend:
- Remove the thyme sprigs from the pot. Add the roasted cauliflower and squeeze the softened garlic cloves from their skins directly into the soup. Using an immersion blender, blend the soup in the pot until smooth or to your preferred texture. If using a regular blender, blend in batches carefully and return to the pot.
- Heat and Season:
- Warm the soup over low heat for 5 minutes to meld the flavors. Taste and adjust salt and pepper as needed for your preferred seasoning level.
- Prepare Croutons (Optional):
- Preheat the oven to 400 degrees Fahrenheit. Cut the bread into small cubes to measure about 2 cups. Toss the bread cubes with olive oil, dried thyme, salt, and pepper. Spread on a baking sheet and bake for 8 to 10 minutes or until golden and crispy.
- Serve:
- Ladle soup into bowls and garnish with the homemade croutons for texture and extra flavor. Alternatively, serve with toasted bread on the side.
One family evening, my kids helped squeeze the roasted garlic and were amazed at how gentle it tasted compared to regular raw garlic.
Storage Tips
Store leftovers in an airtight container in the fridge for up to three days. The soup may thicken when chilled, add a splash of broth or water when reheating to reach your desired consistency. Reheat gently on medium low heat to avoid scorching.
Ingredient Substitutions
If you do not have white navy beans, cannellini beans or Great Northern beans work just as well for creaminess. You can use chicken stock if you prefer a non vegetarian version. Smoked paprika can be swapped for regular paprika but omit if you want a milder flavor. Thyme can be replaced with rosemary or oregano to bring a different herbal note.
Serving Suggestions
This soup pairs beautifully with a crisp salad or steamed greens for a light lunch or dinner. Add grated sharp cheddar or parmesan on top for extra richness. Drizzle a bit of chili oil or sprinkle some red pepper flakes if you want a kick of heat.
This roasted cauliflower soup is creamy, comforting, and easy to make. It adapts well to different seasons and freezes nicely for future meals.
Your Recipe Questions Answered
- → How do you roast cauliflower for maximum flavor?
Roast cauliflower florets with olive oil, salt, pepper, cumin, and paprika at 450°F for 25 minutes, flipping halfway to caramelize evenly.
- → Can I substitute the beans used in the soup?
Yes, cannellini or navy beans both provide creamy texture without overpowering flavors, making them ideal for blending.
- → What is the purpose of roasting garlic with the cauliflower?
Roasting garlic in its skin mellows its sharpness and adds sweetness, enriching the overall depth of the soup.
- → How can I achieve a thicker or chunkier soup texture?
Blend the soup to your desired consistency, leaving some cauliflower pieces intact for added texture if preferred.
- → What are some tips for making the homemade croutons?
Toss bread cubes with olive oil, dried thyme, salt, and pepper before baking at 400°F until golden for crispy, flavorful croutons.
- → How should I reheat the soup without losing its texture?
Add a splash of broth or water, then gently reheat on medium-low heat to maintain smoothness and flavor.