The Ultimate Cauliflower Cheddar Marmite Soup (with Cheesy Croutons!)
Imagine the coziest, most comforting soup imaginable—a thick, velvety purée of sweet, roasted cauliflower, swirled with sharp, mature cheddar cheese. Now, imagine that creamy soup is infused with a secret ingredient that adds an incredible, savory, umami depth that you just can’t put your finger on. That, my friends, is the surprising, mind-blowing magic of…
Imagine the coziest, most comforting soup imaginable—a thick, velvety purée of sweet, roasted cauliflower, swirled with sharp, mature cheddar cheese. Now, imagine that creamy soup is infused with a secret ingredient that adds an incredible, savory, umami depth that you just can’t put your finger on. That, my friends, is the surprising, mind-blowing magic of this Cauliflower, Cheddar, and Marmite Soup. Topped with crunchy, cheesy, Marmite-slathered sourdough croutons, this is, without a doubt, one of the most uniquely delicious soups you will ever make.
I promise you, this soup is a true masterpiece of flavor and texture. The soup itself is luxuriously smooth and creamy, and the homemade cheesy Marmite croutons are a non-negotiable part of the experience—they are salty, savory, crunchy, and completely addictive. It’s a true show-stopper that is perfect for a chilly winter evening when you need a serious bowl of comfort.
Get ready to discover your new favorite soup and create a stunning, restaurant-quality dish that is an absolute umami explosion.
Why This Will Be Your New Favorite Winter Soup!
You are going to be completely obsessed with the deep, savory, and incredibly comforting flavor of this unique soup. It’s a guaranteed sensation. Here’s why you have to make it:
- An Unforgettable Umami Flavor Bomb: The secret ingredient, Marmite, adds an incredible depth of savory, “meaty” flavor that perfectly elevates the sweet cauliflower and sharp cheddar.
- Luxuriously Creamy and Velvety: Roasting the cauliflower first and then blending it into a smooth purée with crème fraîche creates a soup with an unbelievably rich and creamy texture.
- The Most Addictive Croutons Ever: The cheesy, savory, homemade Marmite croutons are a revelation. They provide the perfect crunchy, salty contrast to the smooth soup.
- A True Celebration of Cauliflower: This recipe makes the most of the humble cauliflower by roasting it until deeply golden and caramelized, bringing out its incredible natural sweetness.
- The Ultimate Cozy Comfort Food: There is nothing more comforting than a warm, thick, cheesy soup on a cold day. This dish is the very definition of a hug in a bowl.
Recipe Snapshot
| Prep Time | 15 minutes |
| Cook Time | 1 hour |
| Total Time | 1 hour 15 minutes |
| Servings | 6 servings |
| Calories | 374 kcal per serving |
| Course | Main Course, Soup |
| Cuisine | British / Vegetarian |
| Difficulty/Method | Easy / Roasting & Stovetop |
Your Shopping List for This Umami Masterpiece
This recipe uses a handful of simple ingredients to create its incredible depth of flavor. Here’s what you’ll need:
→ For the Soup
- 3 tbsp olive oil, divided → For roasting and sautéing.
- 1kg cauliflower → Roughly chopped. Don’t throw away the leaves—they get crispy and delicious when roasted!
- 1 onion & 1 celery stick → Finely chopped for the aromatic base.
- 2 garlic cloves, grated → For that essential savory kick.
- 1 tbsp Marmite → The secret weapon for a deep, savory, umami flavor.
- 900ml vegetable stock → Use a good quality stock for the best flavor.
- 60ml crème fraîche → For a touch of tangy creaminess.
- 100g mature cheddar, coarsely grated → A sharp, flavorful cheddar is key.
→ For the Cheesy Marmite Croutons
- 200g sourdough, chopped into chunks → Or another sturdy, rustic bread.
- 2 tbsp unsalted butter → The base for our savory crouton coating.
- 1 tsp Marmite → To make the croutons extra savory.
- 25g mature cheddar, finely grated → For that perfect cheesy, crispy finish.
Let’s Get Cooking! Your Step-by-Step Guide
Ready to create the most incredible cauliflower soup of your life? The key is in roasting the cauliflower for maximum flavor.
Part 1: Roast the Cauliflower
- Preheat the Oven: Get your oven preheating to 220°C/200°C fan/gas 7 (that’s about 425°F).
- Roast for Flavor: On a large roasting tray, toss the chopped cauliflower and its leaves with 2 tablespoons of the olive oil and season well with salt and pepper. Roast for 30-45 minutes, until the cauliflower is completely tender, golden, and has some lovely charred, caramelized edges.
Part 2: Build the Soup & Make Croutons
- Sauté the Aromatics: When the cauliflower has about 15 minutes left to roast, heat the remaining 1 tablespoon of oil in a large pot or Dutch oven over a medium heat. Add the onion and celery with a large pinch of salt and cook for 10 minutes, stirring often, until soft. Add the grated garlic and cook for 2 more minutes.
- Create the Soup Base: Stir in the 1 tablespoon of Marmite, then add all of the roasted cauliflower to the pot. Pour in the vegetable stock (topping up with a little hot water if needed to cover) and bring to a simmer. Let it cook for 10 minutes to meld the flavors.
- Make the Croutons: While the soup simmers, place your sourdough chunks in a medium roasting tray. In a small pan, gently melt the butter and the 1 teaspoon of Marmite together over a low heat, seasoning with a few twists of black pepper. Drizzle this savory butter over the bread chunks, tossing to coat. Bake for 15 minutes. Sprinkle the grated cheddar over the top and bake for a final 3-5 minutes, until golden and super crispy.
Part 3: Blend and Serve
- Blend to Velvety Perfection: Remove the soup pot from the heat. Stir through the crème fraîche and the 100g of grated cheddar. Using a stick blender (immersion blender), carefully blitz the soup directly in the pot until it is completely smooth and velvety. Season with black pepper to taste.
- Serve: Ladle the hot, creamy soup into bowls. Top each serving with a dollop of extra crème fraîche and a generous handful of the warm, cheesy Marmite croutons.
WiseRecipes’ Top Tips for the Perfect Cauliflower Soup
These simple secrets will ensure your soup is flawlessly rich, creamy, and packed with flavor.
- Roast Your Cauliflower Deeply. Don’t be afraid of a little char! Roasting the cauliflower until it’s deeply golden and has some dark, caramelized spots is the absolute key to developing a sweet, nutty, and complex flavor. Boiled cauliflower simply cannot compare.
- Don’t Throw Away the Leaves! The cauliflower leaves become wonderfully crispy and flavorful in the oven. Roasting them and blending them into the soup adds extra flavor and ensures no part of the vegetable goes to waste.
- Marmite is the Umami Bomb. This savory yeast extract is the secret ingredient that gives the vegetarian soup a deep, “meaty” richness that is truly incredible. It perfectly complements the sweet cauliflower and sharp cheddar.
- The Croutons are Not Optional. Seriously! The salty, savory, cheesy, and crunchy Marmite croutons are an essential part of the full experience. They provide the perfect textural contrast to the smooth, creamy soup.
- Use a Stick Blender for Safety and Ease. Puréeing a hot soup is safest and easiest with an immersion (stick) blender directly in the pot. It saves you from the messy and potentially dangerous task of transferring hot liquid to a traditional blender.
Cauliflower, Cheddar and Marmite Soup
Ingredients
Equipment
Method
- Preheat oven to 220C/200C fan/gas 7 (425F). Toss the cauliflower and its leaves with 2 tbsp oil, salt, and pepper. Roast for 30-45 mins until softened and charred.
- For the croutons, melt butter and 1 tsp Marmite. Drizzle over sourdough chunks in a roasting tray. Bake for 15 mins. Sprinkle with cheese and bake for another 3-5 mins until golden and crisp.
- In a large pan, heat 1 tbsp oil. Sauté the onion and celery with salt for 10 mins until soft. Add garlic and cook for 2 mins.
- Stir in 1 tbsp Marmite, then add the roasted cauliflower. Cover with the stock and simmer for 10 mins.
- Remove from the heat. Stir in the crème fraîche and the 100g of cheddar. Use a hand blender to blitz the soup until completely smooth. Season with black pepper.
- Pour the soup into bowls and top with a spoonful of crème fraîche and a few cheesy Marmite croutons.
Notes
Keep It Fresh! Storing Your Soup
This soup is fantastic for making ahead, and the flavors get even better on the second day!
- Refrigerator: Store the leftover soup in an airtight container in the refrigerator for up to 4 days. Store the croutons separately in an airtight container at room temperature to keep them crispy.
- Reheating: Gently reheat the soup in a saucepan over medium heat. Prepare the croutons fresh or re-crisp them in a hot oven for a few minutes before serving.
FAQs: Your Cauliflower Soup Questions, Answered!
What is Marmite, and is there a substitute?
Marmite is a savory food spread made from yeast extract, popular in the UK. It has a very strong, salty, and savory (umami) flavor. If you can’t find it, a good substitute would be a tablespoon of dark soy sauce or a teaspoon of dark miso paste to add a similar umami depth to the broth.
Can I make this soup vegan?
Yes, absolutely! To make it vegan, simply use your favorite brand of meltable vegan cheddar, a plant-based crème fraîche or creamy vegan yogurt, and vegan butter for the croutons. The result will be a delicious and creamy plant-based soup.
Can I make this soup ahead of time?
Yes, it’s a perfect make-ahead dish. You can make the entire soup and store it in the fridge. For the best texture, I recommend making the croutons fresh just before you plan to serve it.
Can I freeze this soup?
Because this soup contains dairy (crème fraîche and cheese), freezing can sometimes alter the texture, making it a bit grainy upon reheating. For the best results, it’s best enjoyed fresh. If you do freeze it, reheat it very gently over low heat, stirring constantly.
Final Thoughts: A Bowl of Umami Heaven
There is nothing quite like a recipe that takes a humble vegetable and transforms it into something so deeply flavorful, comforting, and sophisticated. This Cauliflower, Cheddar, and Marmite Soup is a true celebration of savory flavors. It’s a rewarding, unique, and utterly delicious dish that I know will become a new favorite in your winter soup collection. Happy cooking!
