This Roasted Cauliflower and Red Bell Pepper Soup is a big staple in our home. It’s creamy, nourishing, and so easy to make. The roasted vegetables bring out incredible depth of flavor, with the cauliflower getting beautifully creamy and the red bell peppers adding natural sweetness. Each bowl packs 21 g of protein and 14 g of fiber, making it a really satisfying meal that will keep you full for hours. I love that the oven does most of the work here, and when the produce is in season, you really don’t need much to make this taste amazing. If you’re looking for a comforting soup that’s both delicious and nourishing, this one’s for you!
Why I love this recipe (as a nutritionist)
- High-fiber for gut health: With 14 g of fiber per bowl from cauliflower, chickpeas, and kale, this soup supports digestion and keeps you satisfied.
- Protein-packed: Each serving delivers 21 g of plant-based protein from chickpeas and tofu, making it a balanced, filling meal.
- Minimal ingredients and steps: Easy and satisfying
- Vitamin-rich: Loaded with vitamins A, C, and K from red bell peppers, kale, and cauliflower to support your immune system.
- Iron-rich: with 7mg per bowl, which is increased by the pairing with alliums.
- Simple prep, big flavor: Roasting brings out natural sweetness and depth without complicated techniques.
- Perfect for meal prep: This soup keeps beautifully in the fridge for up to 5 days and freezes well for up to 3 months (without the toppings).
- Warming and seasonal: The blend of Moroccan spices makes this the perfect cozy meal for cool fall and winter evenings.
Ingredient notes
- Cauliflower: Roasting transforms cauliflower into something really special with a slightly nutty flavor, and creamy texture. It’s also packed with fiber and vitamin C.
- Red bell pepper: Adds gorgeous color and natural sweetness when roasted. Rich in vitamin C and antioxidants.
- Tofu: Creates that creamy texture while adding protein. For a soy-free option, use sunflower seeds.
- Ras el hanout: This Moroccan spice blend is one of my favorites! It adds beautiful warmth and complexity to roasted vegetables.
- Chickpeas and kale: I love adding these as crispy toppings! They bring extra protein, fiber, and texture to each bowl.
How to make this recipe (summary)
Prep and roast: Preheat your oven to 350°F (180°C). Chop the cauliflower into florets, quarter the onions, and slice the red bell pepper into strips. Spread everything on a baking sheet, drizzle with olive oil, and season with ras el hanout, salt, and pepper. Roast for 30 minutes until tender and caramelized.
Blend: Let the vegetables cool slightly. Transfer everything to a blender with the vegetable stock and tofu, and blend until smooth and creamy. Warm and season: Pour the soup into a pot over medium-low heat and warm through. Taste and adjust the seasonings as needed.
Prepare toppings: Toss chickpeas and kale with olive oil and zaatar on a baking sheet. Roast until crispy.
Serve: Ladle the soup into bowls and top with the crispy chickpeas and kale. View recipe card below for detailed instructions.
Variations and tips
- Switch up the toppings: Try crispy broccoli or broccolini instead of kale, or add some pumpkin seeds for extra crunch.
- Boost the cheesy flavor: Sprinkle nutritional yeast on top for a savory, umami kick without any dairy.
- Blending tips: A high-powered blender gives the creamiest results, but an immersion blender works too. If using a smaller blender, work in batches and let the soup cool first.
- Serving suggestions: This soup pairs beautifully with crusty bread (like our GF buckwheat bread or GF Seeded Bread), a grilled cheese sandwich, or a simple side salad.
- If you like this recipe, you’ll also love our Roasted Veggie Soup for Glowing Skin, and Marry Me Chickpea Soup.
Why you’ll love this roasted cauliflower and red bell pepper soup
- Creamy comfort
- High-protein, high-fiber
- Easy meal prep
- Roasted vegetable depth
- Warming Moroccan spices
FAQ
- Is this roasted cauliflower soup gluten-free? Yes, it’s naturally gluten-free! Just check that your vegetable stock is gluten-free if using store-bought.
- Can I make this soup soy-free? Absolutely! Replace the tofu with sunflower seeds.
- How long does this soup keep? It stores well in an airtight container in the fridge for up to 5 days, making it perfect for meal prep. Reheat the toppings in the airfryer for a few minutes for extra crispiness.
- Can I freeze this roasted red bell pepper soup? Yes! It freezes beautifully for up to 3 months (without the toppings). Just thaw in the fridge overnight and reheat gently on the stovetop.
Roasted Cauliflower and Red Bell Pepper Soup
A comforting, richly flavored soup made with roasted cauliflower and red bell pepper, enhanced with Moroccan spices. Perfect for cool weather and easy to prepare.
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Equipment
Ingredients
Soup Ingredients
- 2 yellow onion chopped in quarter
- ½ head large cauliflower - chopped into florets – approx 4 cups
- 2 red bell pepper
- ½ tbsp (8 ml) olive oil
- 1 tbsp (6 g) ras el Hanout (Moroccan spice mix) - see notes for substitution
- 3 cups (7010 ml) low sodium vegetable stock
- 6½ oz (185 g) extra firm tofu - or 1/3 cup sunflower seeds
- freshly ground black pepper to taste
- sea salt flakes to taste
Toppings
- 4 cups (85 g) kale - finely chopped
- 1½ cup (245 g) chickpeas - cooked
- 1 tbsp (15 ml) olive oil
- 1 tbsp (12 g) za’atar spices - see notes for substitution
- crispy chili oil - optional
Instructions
- Preheat your oven to 350°F (180°C).
- Bake the vegetable: Chop the red bell pepper in half, remove the stem and core, and place it face down on a large baking tray.Peel and quarter the onions, and place them face down on the baking tray.Combine the cauliflower with ras el hanout, 1 tbsp olive oil, salt, and pepper, then place it on the baking tray with the rest of the vegetables. Bake on the middle rack for 35 minutes. Allow to cool down slightly.
- Prepare the toppings: Spread the chickpeas on a large baking tray, toss with ½ tbsp olive oil, and bake on the top rack for 15 minutes.Meanwhile, combine the finely chopped kale with ½ tbsp olive oil and the za'atar, then massage it with your hand.Add the kale to the tray with the chickpeas and bake for another 10 to 15 minutes until crispy, stirring halfway through.
- Blend: Add the red bell pepper, onion, and cauliflower to a large blender along with the tofu and room temperature vegetable stock. Blend until perfectly smooth, working in two batches if needed.
- Heat and serve: Transfer to a large pot and simmer uncovered on low heat for 10 minutes. Adjust the salt and pepper to taste. Serve with your chickpea and kale toppings, and add chili oil if using. I also recommend a slice of crusty bread, enjoy!
Notes
Ras el hanout simplified substitution: Use 2 parts ground cumin, 1 part ground coriander, 1 part paprika, plus a pinch of cinnamon.
Za’atar simplified substitution: Use 2 parts dried oregano, 1 part sesame seeds, 1 part sumac, lemon zest or a small squeeze of lemon at the end.
Soy-free option: use 1/3 cup of sunflower seeds instead. Soak in hot water while you bake the vegetables, drain, then add to the blender instead of the tofu.
This recipe was updated in 2025
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Your Creations
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I don’t like soy milk what else could I use
Any neutral tasting milk you like 🙂
Just discovered your recipe site when searching for this soup (had a version of this soup in a restaurant, recently, and wanted to make a vegan version). This was so delicious and just what I was looking for. Look forward to perusing the recipes on your site. Many thanks!
That makes me so happy! Thank you for sharing Gina 💚
Cauliflower and red bell pepper are two of the main foods that those on a renal diet should consume. This recipe is perfect!
I’m so glad it’s helpful, thank you for sharing John 🙂
Hi Sarah,
What can I substitute the Moroccan spice mix? It’s not available here
Thanks!
I would do 1/2 tbsp of ground cumin instead, would be lovely in there!
This was a great recipe! Delicious and so healthy. The kale/garbanzo bean topping was especially good. Thank you!
so happy you liked it 💚