With only three ingredients, this roasted butternut squash soup is not only simple but also bursting with flavour. The natural sweetness of the roasted squash blends beautifully with the soft, caramelized onions, creating a creamy, comforting soup your whole family will love. Healthy, hearty, and ready in no time!
The recipe comes together effortlessly in only 2 steps with minimal ingredients, ideal for the winter months. It’s an amazing recipe that will be enjoyed by so many from the vegetarian to the healthy eater. It makes the perfect comforting meal with a slice of crusty bread or a great side dish to a grilled cheese.

If you liked my ginger carrot soup or my French leek soup, you will really love this one too! Also, if you love butternut squash, you should try this pasta roll ups.
🥘 Why you will love my soup recipe
- Easy to make, it is a super simple recipe
- A healthy soup
- Minimal preparation
- Perfect comforting soup for the cold months
- And an amazing soup for everyone: vegetarian, vegan, dairy-free and gluten-free
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🥣 Ingredients Needed
The beauty of this recipe is that it requires only 3 ingredients and from there, you can add anything you wish as a topping to make it a more velvety soup.
- Butternut Squash: For this recipe, we are using a fresh vegetable as we will roast it, but a frozen pre-cut butternut from the grocery store works too!
- Onion: Take a large one or 2 small one to make sure to taste it. I like using the onions I have on hand so white, yellow and sweet onions are great for this.
- Vegetable broth: You can use homemade one or store-bought if it is easier for you.
📋 Variations and Substitutions
Since this recipe is using simple ingredients, it gives you a lot of room to customize it.
- Herbs: Add more flavours by blending some fresh herbs such as sage, rosemary or thyme.
- Spice it up: Add a little kick to your soup with some chili flakes, jalapeno or curry powder.
- Broth: You can also use chicken stock if you wish.
- Toppings: Seeds or toasted nuts, croutons, a drizzle of heavy cream, coconut milk or sour cream for a creamier soup, crumbled feta or goat, or simply some fresh ground black pepper.
In terms of preparation, this recipe can be easily prepared in the Instant Pot or dutch oven too: put all the main ingredients in. You would need to cube the butternut squash to allow it to be immersed in the broth though. Then follow the same instructions, use a regular blender or an immersion blender to puree it.
🔪 How To Prepare It
This recipe has only 2 simple steps. First, you will roast your onion and butternut squash and then blend it with the vegetable stock to make it a soup.
First, using chef knife and a sturdy chopping board, carefully slice the butternut squash in half. Next, using a spoon, scoop out the seed and peel the yellow onion and cut it in 4 (Picture 1).
Place the halved squash and onion on a baking sheet lined with parchment paper or a silicone mat. Drizzle with olive oil and sprinkle with salt or garlic salt.
Tip: Add garlic: roasted garlic cloves will add flavour to your soup!
Next, cook 40 to 45 minutes in the oven. You can poke it with a knife to make sure it is cooked through, like fork tender texture, and ready (Picture 2). It is now ready to be scooped with a spoon.
Lastly, place the flesh of the squash and onion in the blender jar and add the veggie broth. Blend it until smooth and it is ready to serve and the best part it is time to enjoy your hot soup!
Tip: You can also use your immersion blender if you prefer.
💭 Recipe FAQs
Absolutely! Make a big batch and allow to cool to room temperature before pouring it into containers or freezer bags to portion it.
You can either store the leftover soup in an airtight container in the fridge for 3 to 4 days or in the freezer for 2 to 3 months.
Of course, you might want to put a half a cup less of broth and blend. Then, adjust the thickness by adding gradually some more.
Since I roast it, I find it easier to scoop it out. However, the peel is also edible, you can also blend it. Reminder, always wash your produce well before cutting them, even if you are not eating the peel.
Yes, this vegetable is packed with vitamins such as A and C, magnesium and potassium. This delicious butternut squash soup recipe is low on calories and high in fibre.
You can either pour it in a pot and reheat it on medium heat on the stove or place a bowl of soup in the microwave.
🥣 More Delicious Soups
Do you need more inspiration for soup season? I got you covered!
Love this recipe? Please leave a 5-star 🌟🌟🌟🌟🌟 rating on the recipe card below & and a comment about your experience. Follow me on Facebook, Pinterest, and Instagram, thanks!
📖 3-Ingredient Roasted Butternut Squash Soup
Equipment
- 1 Blender
Ingredients
- 1 butternut squash washed
- 1 onion large
- 4 cups vegetable broth
- 1 tablespoon olive oil
- ½ teaspoon salt
Instructions
- Preheat the oven to 400F.
- Next, using a spoon, scoop out the seed and peel the onion and cut it in 4.
- Place everything on a baking sheet covered with parchment paper: the halved squash and the onion and drizzle with olive oil and salt.
- Cook 40 to 45 minutes in the oven. You can poke it with a knife to make sure it is cooked through and ready.
- Once done, scoop the roasted butternut squash flesh and place it the blender with the onion.
- Then, add the broth. Blend it until smooth and it is ready to serve!
Notes
- You can blend the peel with the butternut squash, it is edible. Make sure to wash it before cutting it.
- Use homemade broth or store-bought.
- Serve with cream, seeds, nuts or crispy sage leaves.
Nutrition
🥖 What To Serve With The Soup
If you love some carbs with your soup, here are a few ideas:
everybodylovespretty says
When I get home from Hawaii and am freezing my bum off, this is the soup I will make!!
bonappeteatdotca says
Hawaii??? :( so jealous! Enjoy! !
Heather, Mmm... is for Mommy says
I never need to be coerced into soup... yours sounds wonderful!
Tara says
It's freezing out and I would love to be slurping up a bowl of this!
Mélanie says
I know Tara, I totally agree. The whole house has been sick for a few day, I would be appropriate :)
northandsouthnomads says
I can just imagine the aroma of this! What is it about fall and the delicious recipes it brings? :)
Mélanie says
I know Jessica, although Fall brings the cold too and I am not so fan ahah