Creamy Cauliflower and Broccoli Soup

Featured in: Everyday Table Meals

This comforting bowl features a silky blend of cauliflower and broccoli florets simmered with aromatic vegetables, thyme, and oregano. The soup achieves its luxurious texture through careful blending and a touch of milk, while oven-baked garlic croutons provide satisfying crunch in every spoonful.

Updated on Wed, 28 Jan 2026 12:15:00 GMT
Creamy Cauliflower and Broccoli Soup topped with golden croutons, fresh parsley, and Parmesan in a rustic bowl. Save
Creamy Cauliflower and Broccoli Soup topped with golden croutons, fresh parsley, and Parmesan in a rustic bowl. | platerelay.com

The rain was pattering against my kitchen window when I first attempted this cauliflower and broccoli soup. I had a surplus of vegetables threatening to wilt in my crisper drawer and a need for something warming. The transformation of simple ingredients into this velvety, comforting bowl surprised me that afternoon. What began as a practical solution to use up vegetables quickly became a recipe I returned to whenever the weather turned chilly.

Last winter, my neighbor knocked on my door after coming home from the hospital, looking exhausted. Without thinking, I ladled a generous portion of this soup into a container along with some fresh croutons. Three days later, her daughter stopped by with the empty container and a note requesting the recipe. Sometimes the simplest foods become the most meaningful gifts when someone needs comfort.

Ingredients

  • Cauliflower and Broccoli: The backbone of this soup, providing earthy sweetness and incredible texture when blended, plus I've found that roasting a small portion of the florets first adds unexpected depth.
  • Vegetable Broth: The better quality your broth, the more flavorful your soup, and I've learned that adding a parmesan rind while simmering works wonders.
  • Aromatic Base: Onions, carrots, celery, and garlic create the foundation that transforms this from a simple puree into a complex, layered soup worth savoring.
  • Milk: This adds creaminess without heaviness, and plant-based alternatives work beautifully if you're avoiding dairy.
  • Croutons: These golden cubes add textural contrast that makes each spoonful more interesting, and using day-old bread gives them the perfect density.

Instructions

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Prep your crouton magic:
Preheat your oven to 375°F while you toss those bread cubes with olive oil, garlic powder and a whisper of salt. The kitchen will start filling with a toasty garlic aroma as they transform into golden nuggets of crunch.
Build your flavor foundation:
Heat olive oil in a large pot and add your diced onion, celery and carrots, letting them slowly soften and release their sweetness. Watch how they gradually become translucent, indicating they're ready for the next step.
Awaken the aromatics:
Add garlic and herbs, stirring just until the kitchen fills with that incredible fragrance that signals good things are happening. Be careful not to let the garlic brown or it might turn bitter.
Vegetable bath:
Toss in your cauliflower and broccoli florets, letting them get acquainted with the aromatic base before adding the broth. Listen for the satisfying sizzle as they hit the hot pot.
Simmer to tenderness:
Pour in your vegetable broth, bring everything to a gentle boil, then reduce the heat and let it simmer covered until the vegetables surrender their firmness. You'll know they're ready when a fork easily slides through.
Transform with blending:
Remove from heat and blend until the mixture becomes silky smooth, watching the transformation from chunky vegetables to velvety soup. I prefer working in batches for the stand blender to prevent splashing hot liquid.
Finish with richness:
Stir in the milk, season with salt and pepper to taste, and gently reheat if needed. This final touch brings everything together into a cohesive, comforting whole.
Serve with style:
Ladle the hot soup into bowls and crown with crispy croutons, fresh parsley, and a light shower of cheese if desired. The contrast of temperatures and textures makes each spoonful an experience.
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Savory Cauliflower and Broccoli Soup served steaming hot with crunchy croutons and herbs on a cozy kitchen table. Save
Savory Cauliflower and Broccoli Soup served steaming hot with crunchy croutons and herbs on a cozy kitchen table. | platerelay.com

One Sunday afternoon, a fierce storm knocked out our power just as I was finishing this soup. We ended up lighting candles and serving it in mugs we could wrap our cold hands around. The children, usually racing through dinner, sat quietly sipping, their faces illuminated by candlelight. In that unexpected darkness, this simple soup created a moment of peace we still talk about.

Make It Your Own

The beauty of this soup lies in its flexibility. Some evenings I add a swirl of pesto just before serving, which introduces a fresh herbal note against the creamy background. Other times, especially when serving guests, I scatter roasted florets I've set aside on top for visual appeal and textural contrast. During autumn, I've even stirred in roasted garlic instead of fresh, which lends a sweeter, more mellow flavor profile that complements the seasonal shift.

Storage and Freezing

This soup develops even deeper flavor after a night in the refrigerator, making it ideal for meal prep. I discovered this accidentally when rushing out the door one morning, leaving a portion uneaten. When I returned that evening, the flavors had mellowed and married in a way that transformed it entirely. For freezing, I portion it into silicone muffin trays before transferring the frozen pucks to storage bags, creating perfect single-serving portions that defrost quickly.

Serving Suggestions

While this soup stands beautifully on its own, it truly shines as part of a larger meal experience. On particularly cold evenings, I've paired it with grilled cheese sandwiches made with sharp cheddar and a thin spread of whole grain mustard, creating a comforting duo that satisfies deeply. For lighter meals, a simple side salad with crisp apples, toasted walnuts, and a light vinaigrette provides refreshing contrast to the soup's creaminess.

  • For an elegant dinner party starter, serve in small cups with a single large crouton floating on top and a tiny sprig of fresh thyme.
  • Create a soup bar with various toppings like bacon bits, chives, different cheeses, and seeds so everyone can customize their bowl.
  • Remember to warm your serving bowls by filling them with hot water for a minute before emptying and filling with soup, keeping everything delightfully hot to the last spoonful.
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Comforting Cauliflower and Broccoli Soup blended silky smooth, garnished with fresh parsley and golden croutons for dipping. Save
Comforting Cauliflower and Broccoli Soup blended silky smooth, garnished with fresh parsley and golden croutons for dipping. | platerelay.com

This humble soup has taught me that comfort doesn't always require complexity. Sometimes the most nourishing dishes come from the simplest ingredients, transformed with a little patience and care.

Recipe FAQs

Can I freeze this soup?

Yes, freeze cooled soup in airtight containers for up to 3 months. Thaw overnight and reheat gently, adding extra liquid if needed.

How do I make it extra creamy?

Add a splash of heavy cream during the final heating step, or blend in a peeled potato while cooking for natural creaminess.

What vegetables work as substitutions?

Try substituting half the cauliflower with Romanesco, or add diced potatoes for extra body. Zucchini works well during summer months.

Can I make this without a blender?

For chunky style, mash vegetables slightly with a potato masher. Alternatively, use a food processor in smaller batches for smoother results.

How long do homemade croutons stay fresh?

Store cooled croutons in an airtight container at room temperature for up to 1 week. Refresh in a 350°F oven for 5 minutes if they soften.

What protein additions work well?

Stir in white beans during simmering, top with shredded rotisserie chicken, or serve alongside crusty bread and aged cheese for a complete meal.

Creamy Cauliflower and Broccoli Soup

Velvety smooth vegetable blend with cauliflower, broccoli, and golden garlic croutons

Time to Prep
15 minutes
Time to Cook
30 minutes
Total Duration
45 minutes
Created by Henry Foster

Recipe Category Everyday Table Meals

Skill Level Easy

Cuisine International

Makes 4 Portions

Dietary Details Vegetarian-Friendly

Ingredient List

Vegetables

01 1 medium head cauliflower, cut into florets
02 1 medium head broccoli, cut into florets
03 1 medium onion, diced
04 2 celery stalks, diced
05 2 medium carrots, diced
06 2 garlic cloves, minced

Liquids

01 4 cups vegetable broth
02 1 cup milk or unsweetened plant-based milk

Spices & Seasoning

01 2 tablespoons olive oil
02 1 teaspoon dried thyme
03 1/2 teaspoon dried oregano
04 Salt and freshly ground black pepper to taste

Croutons

01 2 cups cubed crusty bread
02 2 tablespoons olive oil
03 1/2 teaspoon garlic powder
04 Pinch of salt

Optional Toppings

01 2 tablespoons chopped fresh parsley
02 Grated Parmesan or vegetarian hard cheese

Directions

Step 01

Prepare Croutons: Preheat oven to 375°F. Toss bread cubes with 2 tablespoons olive oil, garlic powder, and salt. Spread on a baking sheet and bake for 10 to 12 minutes until golden and crisp. Set aside.

Step 02

Sauté Aromatics: In a large pot, heat 2 tablespoons olive oil over medium heat. Add diced onion, celery, and carrots; sauté for 5 minutes until softened.

Step 03

Bloom Seasonings: Add minced garlic, dried thyme, and dried oregano; cook for 1 minute until fragrant.

Step 04

Build Base: Stir in cauliflower and broccoli florets, cook for 2 to 3 minutes.

Step 05

Simmer Vegetables: Pour in vegetable broth; bring to a boil, then reduce heat and simmer covered for 15 to 20 minutes until vegetables are tender.

Step 06

Blend Soup: Remove from heat. Use an immersion blender to blend soup until smooth and creamy, or blend in batches using a stand blender.

Step 07

Finish Soup: Stir in milk and season with salt and pepper to taste. Gently reheat if needed.

Step 08

Serve: Ladle soup into bowls and top with croutons, fresh parsley, and grated cheese if desired. Serve hot.

Equipment Needed

  • Large soup pot
  • Chef's knife and cutting board
  • Baking sheet
  • Immersion blender or stand blender
  • Wooden spoon

Allergy Advice

Always check every ingredient for potential allergens. Ask your doctor if you're unsure.
  • Contains wheat from croutons
  • Contains milk if using dairy milk or cheese
  • Use gluten-free bread for croutons to accommodate gluten sensitivity
  • Use plant-based milk and omit cheese for dairy-free preparation
  • Always verify ingredient labels for undisclosed allergens

Nutrition Info (per serving)

For reference only—please consult a nutritionist or healthcare provider for dietary advice.
  • Caloric Value: 240
  • Fat Content: 10 grams
  • Carbohydrate: 30 grams
  • Proteins: 8 grams