Cauliflower and Broccoli Soup

Featured in: Everyday Suppers

This warming cauliflower and broccoli soup combines tender vegetables in a creamy, blended base topped with golden homemade croutons. Sautéed onions, carrots, and celery create a flavorful foundation, while potato adds body to the soup. After simmering in vegetable stock with aromatic thyme and nutmeg, the vegetables are blended smooth and enriched with milk. The result is a comforting, nutrient-dense bowl perfect for any season.

Updated on Fri, 30 Jan 2026 12:06:00 GMT
Creamy blended cauliflower and broccoli soup topped with golden homemade croutons, served in a rustic bowl. Pin It
Creamy blended cauliflower and broccoli soup topped with golden homemade croutons, served in a rustic bowl. | hyperflavors.com

The kitchen smelled like butter and garlic when I realized I'd bought way too much cauliflower at the farmers market. My friend laughed and said, just make soup, which felt almost too simple until I tasted the first spoonful. That creamy, comforting bowl with crunchy golden croutons on top became my go-to whenever I need something warm and filling without much fuss. Now I keep extra cauliflower around on purpose.

I made this for my sister during a rainy weekend, and she kept going back for seconds even though she swore she wasnt that hungry. We sat at the table with our bowls, dipping the croutons until they were soft, talking about nothing in particular. It was one of those meals that didnt need a reason, just the right moment and the right company.

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Ingredients

  • Cauliflower: The star of the soup, it breaks down into silky smoothness and has a mild flavor that soaks up every bit of seasoning you add.
  • Broccoli: Adds color and a slightly earthy taste that balances the sweetness of the other vegetables.
  • Onion: Builds the base flavor, turning sweet and mellow as it softens in the oil.
  • Carrots: Bring natural sweetness and a little body to the broth, plus they cook down beautifully.
  • Celery: Adds a subtle herbal note and aromatic backbone that makes the whole pot smell amazing.
  • Garlic: Just a quick minute in the pan releases that warm, nutty fragrance that makes everything better.
  • Potato: Thickens the soup naturally without needing flour or cornstarch, making it creamy without cream.
  • Vegetable stock: The foundation, choose one with good flavor because it really comes through in every spoonful.
  • Milk: Softens the texture and adds a gentle richness, you can use dairy or plant-based with equal success.
  • Olive oil: Used twice, once for sauteing and once for toasting the croutons to crispy perfection.
  • Thyme: A pinch of dried thyme gives the soup that cozy, slightly woodsy flavor.
  • Black pepper and salt: Season generously, tasting as you go, because underseasoned soup is a missed opportunity.
  • Nutmeg: Optional but lovely, just a tiny grating adds warmth and a hint of something you cant quite name.
  • Day-old bread: Stale bread makes the best croutons because it crisps up without getting soggy.
  • Garlic powder: Coats the bread cubes evenly and toasts into every crunchy bite.

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Instructions

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Get the oven ready:
Preheat your oven to 180 degrees Celsius so its hot and waiting when the croutons are ready to bake. This step is easy to forget, but starting early saves you time later.
Start the base:
Heat olive oil in a large pot over medium heat, then add the onion, carrot, and celery, stirring occasionally until they soften and smell sweet. This takes about five minutes and builds all the flavor underneath.
Add the garlic:
Toss in the minced garlic and stir for just one minute until fragrant. Be careful not to let it brown or it will turn bitter.
Layer in the vegetables:
Add the potato, cauliflower, and broccoli, stirring everything together for about three minutes. This quick saute helps the vegetables pick up the flavors from the pot.
Simmer the soup:
Pour in the vegetable stock, then add thyme, salt, pepper, and a pinch of nutmeg if youre using it. Bring it to a boil, then lower the heat and let it simmer for twenty minutes until the vegetables are completely tender.
Make the croutons:
While the soup simmers, toss your bread cubes with olive oil, garlic powder, salt, and pepper, then spread them on a baking sheet. Bake for ten to twelve minutes, flipping once, until theyre golden and crunchy.
Blend it smooth:
Once the vegetables are soft, take the pot off the heat and use an immersion blender to puree the soup until its silky. If you dont have one, blend it in batches in a countertop blender, just be careful with the hot liquid.
Finish with milk:
Stir in the milk and gently reheat the soup over low heat. Taste it now and adjust the salt and pepper if needed.
Serve it up:
Ladle the soup into bowls and pile those warm croutons on top. Serve it right away while the croutons are still crisp.
Homemade cauliflower and broccoli soup finished with crisp croutons, ready to enjoy on a chilly day. Pin It
Homemade cauliflower and broccoli soup finished with crisp croutons, ready to enjoy on a chilly day. | hyperflavors.com

This soup became my comfort meal during a particularly cold winter when I was working long days and needed something I could make ahead. I'd reheat a bowl after work, add fresh croutons, and just sit quietly with it. It was enough to remind me that taking care of yourself can be as simple as a pot of vegetables and a little butter-toasted bread.

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Making It Your Own

You can easily adjust the creaminess by adding a couple tablespoons of cream cheese or a splash of heavy cream at the end. For a vegan version, use plant-based milk and skip any dairy additions, the soup will still be rich and satisfying. If you like a little heat, sprinkle in some chili flakes or smoked paprika when you add the stock, it gives the soup a gentle warmth without overpowering the vegetables.

Storage and Reheating

This soup keeps beautifully in the fridge for up to four days in an airtight container. Reheat it gently on the stovetop over low heat, adding a splash of stock or milk if it thickens too much. Store the croutons separately in a sealed bag at room temperature so they stay crisp, then add them fresh when you serve each bowl.

Pairing and Serving Ideas

I love serving this with a crisp white wine like Sauvignon Blanc, the acidity cuts through the creaminess perfectly. A simple green salad with lemon vinaigrette on the side makes it feel like a complete meal. You can also serve it with crusty bread for dipping, though honestly the croutons are usually enough.

  • Top with grated Parmesan or nutritional yeast for extra savory flavor.
  • Drizzle a little truffle oil over each bowl for a fancy touch.
  • Garnish with fresh parsley or chives for a pop of color and freshness.
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A warm, blended cauliflower and broccoli soup garnished with crunchy croutons, perfect for cozy dinners. Pin It
A warm, blended cauliflower and broccoli soup garnished with crunchy croutons, perfect for cozy dinners. | hyperflavors.com

This soup has a way of making any day feel a little cozier, whether youre feeding a crowd or just yourself. Keep it simple, taste as you go, and dont forget those croutons.

Recipe Questions & Answers

Can I make this soup dairy-free?

Yes, simply substitute the whole milk with your preferred plant-based milk such as almond, oat, or cashew milk. The soup will remain creamy and delicious.

How do I make gluten-free croutons?

Use gluten-free bread instead of regular bread. Toss with olive oil and seasonings, then bake until crispy following the same method in the instructions.

Can I freeze this soup?

Yes, this soup freezes well for up to 3 months. Store in airtight containers and thaw overnight in the refrigerator. Reheat gently on the stovetop, adding a splash of stock or milk if needed.

What can I use instead of an immersion blender?

A regular countertop blender works perfectly. Blend the soup in batches, filling the blender only halfway and removing the center cap to allow steam to escape. Cover with a towel for safety.

How can I add more protein to this soup?

Stir in cooked white beans, chickpeas, or lentils after blending. You can also top with shredded cheese, Greek yogurt, or serve alongside a grilled cheese sandwich.

Can I use frozen vegetables instead of fresh?

Yes, frozen cauliflower and broccoli work well. Add them directly to the pot without thawing. You may need to reduce the cooking time slightly as frozen vegetables cook faster.

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Cauliflower and Broccoli Soup

Creamy vegetable soup with cauliflower, broccoli, and crispy homemade croutons. Ready in 45 minutes.

Time to Prep
15 min
Time to Cook
30 min
Total Duration
45 min
Created by Aria Brooks

Dish Type Everyday Suppers

Skill Level Easy

Cuisine Type International

Makes 4 Serving Size

Dietary Notes Vegetarian-Friendly

What You'll Need

Vegetables

01 1 medium head cauliflower, cut into florets
02 1 medium head broccoli, cut into florets
03 1 medium onion, diced
04 2 medium carrots, diced
05 2 celery stalks, diced
06 3 cloves garlic, minced
07 1 medium potato, peeled and diced

Liquids

01 5 cups vegetable stock
02 3/4 cup whole milk or plant-based milk
03 2 tablespoons olive oil

Seasonings

01 1 teaspoon dried thyme
02 1/2 teaspoon ground black pepper
03 1 teaspoon salt, or to taste
04 Pinch of nutmeg, optional

Croutons

01 2 cups day-old bread, cut into cubes
02 2 tablespoons olive oil
03 1/2 teaspoon garlic powder
04 Salt and pepper, to taste

How to Make It

Step 01

Prepare croutons: Preheat oven to 350°F for the croutons.

Step 02

Sauté aromatics: In a large pot, heat 2 tablespoons olive oil over medium heat. Add onion, carrot, and celery. Sauté for 5 minutes until softened.

Step 03

Add garlic and vegetables: Stir in garlic and cook for 1 minute. Add potato, cauliflower, and broccoli. Sauté for another 3 minutes.

Step 04

Simmer soup base: Pour in the vegetable stock. Add thyme, salt, pepper, and nutmeg. Bring to a boil, then reduce heat and simmer for 20 minutes until vegetables are tender.

Step 05

Bake croutons: Meanwhile, toss bread cubes with olive oil, garlic powder, salt, and pepper. Spread on a baking sheet and bake for 10 to 12 minutes, turning once, until golden and crisp. Set aside.

Step 06

Blend soup: When vegetables are soft, remove the pot from heat. Use an immersion blender to blend the soup until smooth, or blend in batches in a countertop blender.

Step 07

Finish with milk: Stir in the milk and gently reheat the soup. Adjust seasoning to taste.

Step 08

Serve: Ladle the soup into bowls and top generously with homemade croutons.

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What You Need

  • Large pot
  • Immersion blender or countertop blender
  • Baking sheet
  • Chef's knife
  • Cutting board

Allergy Info

Be sure to check every ingredient for possible allergens. If unsure, reach out to a health specialist.
  • Contains gluten in croutons and some vegetable stocks
  • Contains dairy if milk or cream is used
  • For gluten-free preparation, use gluten-free bread for croutons and verify the stock
  • For dairy-free preparation, use plant-based milk

Nutritional Breakdown (per serving)

Nutritional details are for informational purposes and shouldn't replace advice from your doctor.
  • Caloric Value: 260
  • Fats: 10 g
  • Carbohydrates: 34 g
  • Proteins: 8 g

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