This roasted butternut squash and cauliflower soup is a rich, nutrient-dense dish perfect for cold weather. By roasting the vegetables first, you create a deep, caramelized flavor profile that is far superior to boiling.
List of ingredients
- 1 medium butternut squash (2-3 lbs.), chopped into 1-inch cubes – provides the creamy base and sweetness.
- 1 head of cauliflower, chopped into florets – adds a silky texture and mild earthiness.
- 1 medium onion – adds essential aromatic depth.
- 2 cloves garlic, minced – provides a pungent, savory kick.
- 1 tablespoon fresh sage, chopped – adds a distinct autumnal herb flavor.
- Olive oil – used for roasting the vegetables.
- Salt and pepper, to taste – used for seasoning throughout the process.
- 4 cups vegetable stock, divided – used for blending and thinning the soup.
- 1/2 cup coconut milk (or cow’s milk) – creates a rich and creamy finish.
step-by-step instructions
- Preheat the oven: Set your oven to 425 F to ensure the vegetables brown quickly.
- Roast the vegetables: In a large 1/2 pan baking tray, combine the butternut squash, cauliflower, onion, garlic, sage, and olive oil. Season with salt and pepper, toss thoroughly to coat, and bake for 20-25 minutes until the vegetables are soft and tender.
- Puree the mixture: Transfer the roasted vegetables into a food processor or a blender, working in two batches if necessary. Add 2 cups of the vegetable stock and puree until the mixture is completely smooth.
- Simmer and finish: Pour the pureed soup into a large pot and stir in the remaining 2 cups of stock. Bring the soup to a simmer, then stir in the coconut milk. Season with additional salt and pepper to taste. If the soup is too thick, stir in small amounts of water until you reach your desired consistency.
- Garnish and serve: Ladle the soup into bowls and top with a drizzle of coconut milk, fresh herbs, or toasted pepitas for added texture.
Vegetable Preparation Techniques
Selecting the Best Butternut Squash
Choose a squash that feels heavy for its size and has a matte skin without soft spots. Ensure the neck is relatively straight, which makes it easier to cut into uniform cubes for even roasting.
Cutting Cauliflower for Uniform Cooking
Cut the cauliflower into small, equal-sized florets to ensure they roast at the same rate as the squash. This prevents the smaller pieces from burning while the larger chunks remain raw in the center.
Efficient Squash Peeling Methods
Use a sharp chef’s knife to slice off the top and bottom of the squash to create a stable base. Cut the squash in half lengthwise, scoop out the seeds, and peel the skin from top to bottom in long, controlled strokes.
Optimizing the Roasting Process
Avoiding Pan Overcrowding
Use a large baking sheet to ensure the vegetables are in a single layer with space between them. Overcrowding the pan leads to steaming rather than roasting, which prevents the vegetables from developing a caramelized exterior.
Monitoring Roast Temperatures
Keep an eye on the garlic cloves, as they can burn faster than the squash. If the garlic begins to brown too quickly, cover the tray loosely with foil for the remaining few minutes of cooking.
Utilizing Parchment Paper
Line your baking tray with parchment paper or a silicone mat to prevent the vegetables from sticking to the pan. This also significantly reduces the time spent cleaning the tray after the vegetables are transferred.
Blending for Maximum Smoothness
Safe Blending of Hot Liquids
When blending hot soup, always remove the center plastic piece of the blender lid and cover the hole with a folded kitchen towel. This allows steam to escape and prevents the lid from popping off due to pressure.
Using a High-Power Immersion Blender
If you prefer not to transfer the soup to a blender, a high-power immersion blender can be used directly in the pot. Move the blender in slow, circular motions to ensure every chunk of vegetable is fully incorporated.
Straining for a Velvety Finish
For a restaurant-quality texture, pass the blended soup through a fine-mesh sieve using the back of a spoon. This removes any remaining fibrous bits of squash or sage, resulting in a perfectly smooth consistency.
Flavor Enhancement Strategies
Swapping Sage for Other Herbs
While sage is traditional, you can substitute it with fresh thyme, rosemary, or a combination of both for a different aromatic profile. Use the same quantity as the sage, but be mindful that rosemary is more potent.
Balancing Salt and Acidity
If the soup tastes flat, add a small squeeze of fresh lemon juice or a teaspoon of apple cider vinegar. The acidity cuts through the richness of the coconut milk and brightens the overall flavor of the roasted vegetables.
Adding Warm Spices
A pinch of ground nutmeg or cinnamon can enhance the natural sweetness of the butternut squash. Stir these in during the simmering stage to integrate the flavors without overpowering the fresh sage.
Dairy and Creamy Alternatives
Using Full-Fat Coconut Milk
For the richest texture, use full-fat canned coconut milk rather than the carton version. The higher fat content provides a more luxurious mouthfeel and a more opaque, creamy color.
Substituting with Cashew Cream
To make a nut-based creamy alternative, blend soaked raw cashews with a bit of water until smooth. This provides a neutral, creamy flavor that doesn’t have the slight coconut taste found in coconut milk.
Integrating Traditional Dairy
If you prefer cow’s milk or heavy cream, stir it in at the very end over low heat. Avoid boiling the soup after adding dairy to prevent the cream from separating or curdling.
Serving and Pairing Suggestions
Pairing with Crusty Breads
Serve this soup with toasted sourdough, ciabatta, or a warm baguette for dipping. The crunch and tang of fermented bread contrast well with the sweetness of the roasted squash.
Adding Textural Garnishes
Toasted pepitas (pumpkin seeds) or sunflower seeds add a necessary crunch to the smooth soup. A few drops of chili oil can also be added for a spicy kick that complements the creamy base.
Fresh Herb Finishing
Garnish each bowl with a sprig of fresh parsley or a leaf of fried sage. This adds a pop of color and a fresh aroma that enhances the presentation of the dish.
Storage and Reheating Advice
Refrigeration Guidelines
Store the soup in an airtight container in the refrigerator for up to five days. Ensure the soup is cooled slightly before sealing the lid to prevent excessive condensation from forming inside.
Freezing for Long-Term Use
Freeze the soup in portions without the coconut milk added. Add the cream or coconut milk fresh during the reheating process to maintain the best texture and prevent the fat from separating.
Best Reheating Methods
Reheat the soup slowly on the stovetop over medium-low heat. Stir frequently to ensure the bottom doesn’t scorch, and add a splash of water or stock if the soup has thickened too much in the fridge.
Common Troubleshooting
Fixing a Soup That is Too Thin
If the consistency is too watery, simmer the soup uncovered for an additional 10-15 minutes. This allows excess moisture to evaporate, concentrating the flavors and thickening the liquid.
Correcting an Overly Thick Texture
If the soup is too thick, whisk in a small amount of vegetable stock or water one tablespoon at a time. Stir until you reach the desired consistency, ensuring you don’t dilute the flavor too much.
Dealing with Burnt Vegetable Bits
If some pieces of cauliflower or onion charred too much during roasting, pick them out before blending. Blending burnt pieces into the soup can introduce a bitter taste that is difficult to mask.
Frequently Asked Questions
Can I make this soup in a slow cooker?
Yes, you can sauté the onion and garlic first, then add all the chopped vegetables and stock to the slow cooker. Cook on low for 6-8 hours, then puree and stir in the coconut milk.
Do I have to peel the butternut squash?
Yes, the skin of the butternut squash is too tough to be blended smoothly. Peeling the squash ensures the soup has a velvety texture without any woody fragments.
Which vegetable stock works best for this recipe?
A low-sodium vegetable stock is recommended so you can control the salt levels. This prevents the soup from becoming too salty after the stock reduces during the simmering process.
Print
Creamy Roasted Butternut Squash and Cauliflower Soup
- Total Time: 35 minutes
- Yield: 6 servings 1x
- Diet: Vegan
Description
Creamy roasted butternut squash and cauliflower soup has all the fall feels and is vegan and gluten-free. Plus, it’s super easy to make in a sheet pan.
Ingredients
- 1 medium butternut squash (2–3 lbs.), chopped into 1-inch cubes
- 1 head of cauliflower, chopped into florets
- 1 medium onion
- 2 cloves garlic, minced
- 1 tablespoon fresh sage, chopped
- olive oil
- salt and pepper, to taste
- 4 cups vegetable stock, divided
- 1/2 cup coconut milk
Instructions
- Preheat: Preheat oven to 425 F.
- Roast: In a large 1/2 pan baking tray, combine butternut squash, cauliflower, onion, garlic, sage and olive oil. Add salt and pepper to taste, and toss to combine. Bake for 20-25 minutes, until vegetables are soft and tender.
- Puree: Transfer vegetables into a food processor or a blender (in 2 batches if needed). Add 2 cups of stock and puree until smooth.
- Simmer: Transfer soup to a large pot, add remaining stock, and stir to combine. Bring soup to a simmer, and stir in coconut milk. Season with more salt and pepper, to taste. If the soup is too thick, add some water until desired consistency is reached.
- Serve: Serve with a drizzle of coconut milk and fresh herbs or toasted pepitas on top.
Notes
Equipment used: a large ½ pan baking tray, a food processor or blender, and a large pot. For a one-pot version, saute onions and garlic, add remaining ingredients, and simmer for 25 minutes before pureeing. Adjust thickness with water or by simmering longer uncovered.
- Prep Time: 15 minutes
- Cook Time: 20 minutes
- Category: Soup
- Method: Roasted
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 190 kcal
- Sugar: 8 g
- Sodium: 620 mg
- Fat: 10 g
- Saturated Fat: 4 g
- Unsaturated Fat: 6 g
- Trans Fat: 0 g
- Carbohydrates: 22 g
- Fiber: 6 g
- Protein: 4 g
- Cholesterol: 0 mg