As the leaves begin to turn and the air grows crisp, nothing beats the comfort of a hearty bowl of soup. I found comfort recently in a cozy corner of my kitchen, where the sweet aroma of caramelized onions mingled beautifully with the earthy notes of butternut squash. With just a few simple ingredients, I crafted a creamy soup that not only warms the soul but also nourishes the body.
This Caramelized Onion Butternut Squash Soup is an easy recipe, perfect for busy weeknights, and suitable for both the Instant Pot and stovetop. It’s not just a treat for the taste buds; it’s a nutrient-dense delight that’s Whole30 compliant and paleo-friendly. Whether you’re looking to escape the fast-food routine or simply want to indulge in homemade goodness, this soup is your answer. Join me in creating a dish that tastes like a warm hug on a chilly day!
Why is Caramelized Onion Butternut Squash Soup a Must-Try?
Cozy Comfort: This soup delivers a warm embrace in every spoonful, making it perfect for chilly evenings.
Nutritious Ingredients: Packed with real whole foods, it’s not only delicious but also incredibly healthy.
Versatile Cooking Methods: Whether in an Instant Pot or on the stovetop, this recipe adapts to your kitchen style effortlessly.
Quick & Easy: With minimal prep and straightforward steps, even novice cooks can enjoy homemade bliss.
Family-Friendly Appeal: Its rich, savory flavor is sure to please both kids and adults alike—no fast food needed!
Dive into the comforting goodness and discover your new favorite bowl of soup!
Caramelized Onion Butternut Squash Soup Ingredients
For the Base
- Onion – Provides foundational flavor and sweetness; use a medium to larger-sized onion for best results.
- Extra Virgin Olive Oil – Adds richness and helps sauté vegetables; substitute with avocado oil if desired.
- Garlic – Enhances savory flavor; fresh garlic gives the best results; pre-minced can work in a pinch.
- Carrots – Adds subtle sweetness and texture; fresh is best, but frozen can be used if necessary.
- Celery – Contributes to the aromatic base; substitute with fennel for an anise flavor.
For the Soup
- Bone Broth – Enriches the soup with protein and nutrients; use chicken, beef, or pork broth for flavor, with homemade being preferred.
- Butternut Squash – The star of the soup, offering creaminess and natural sweetness; fresh is recommended for the best taste.
- Pepper – For seasoning; adjust according to your heat preference.
- Salt – Enhances flavors; use fine grain salt for better integration into the soup. Himalayan pink salt is recommended.
With these high-quality ingredients, your Caramelized Onion Butternut Squash Soup will be a comforting, nutritious dish you and your family will adore!
How to Make Caramelized Onion Butternut Squash Soup
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Sauté Onions: In your Instant Pot, sauté diced onions in a splash of extra virgin olive oil on “normal” for about 45-60 minutes, stirring occasionally until they turn a beautiful golden brown. This sweetness will be the soup’s foundation.
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Add Aromatics: Stir in minced garlic, diced carrots, and diced celery. Cook for 3-5 minutes, allowing them to soften and release their flavors, enhancing the aromatic base of your soup.
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Combine Main Ingredients: Gently add the butternut squash cubes and rich bone broth to the pot. This adds creaminess and depth to your soup while packing a nutrient punch.
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Cook: Secure the lid on the Instant Pot. Set it to “pressure cook” for 10 minutes, then manually release the pressure once cooking is complete.
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Purée: Carefully purée the soup using an immersion blender right in the pot, or transfer it to a blender in batches, letting steam escape safely to avoid any splatters.
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Simmer and Season: Return the puree to the pot and simmer for 10-30 minutes until thickened. Season with salt and pepper to taste, adjusting flavors as desired for the perfect finish.
Optional: Top with a swirl of coconut cream or a sprinkle of fresh herbs for an extra touch of flavor.
Exact quantities are listed in the recipe card below.
Caramelized Onion Butternut Squash Soup Variations
Feel free to get creative with this recipe and make it your own; the possibilities are endless!
- Sweet Potato: Swap butternut squash for sweet potato for a slightly sweeter, richer flavor.
- Nutmeg Touch: Add a pinch of nutmeg or cinnamon for a warm, inviting aroma that enhances the flavor profile.
- Greens Boost: Incorporate kale or spinach during the last simmer for an extra boost of color and nutrients.
- Creamy Coconut: Stir in a splash of coconut milk before puréeing for a creamier texture and tropical notes.
- Spicy Kick: Add a dash of cayenne pepper or red pepper flakes for a subtle heat that contrasts beautifully with the sweetness.
- Herb Infusion: Use fresh herbs, such as thyme or rosemary, during the cooking process to elevate the soup’s earthy flavors.
- Apple Delight: Cube an apple and sauté it with the onions for a hint of sweetness that pairs perfectly with butternut squash.
- Roasted Garlic: Swap fresh garlic for roasted garlic to introduce a deep, caramelized flavor that adds complexity to the soup.
Each variation offers a delightful twist, inviting you to explore new flavors while enjoying this beloved classic.
What to Serve with Caramelized Onion Butternut Squash Soup?
A bowl of rich and creamy soup calls for hearty accompaniments to create a satisfying meal experience.
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Crusty Sourdough Bread: This warm, chewy loaf is perfect for dipping and complements the soup’s creamy texture beautifully. A sprinkle of sea salt adds an extra flavor boost!
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Fresh Green Salad: A bright salad with mixed greens, dressed in olive oil and balsamic vinegar, adds a refreshing crunch that’s ideal alongside the velvety soup.
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Hearty Quinoa Salad: Packed with colorful veggies and a tangy lemon dressing, this nutrient-dense option balances the flavors of the soup while providing a delightful forkful in every bite.
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Roasted Vegetables: Oven-roasted carrots and Brussels sprouts come with a caramelized finish that mirrors the soup’s flavors, creating a comforting meal that delights the palate.
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Savory Herb Crackers: Perfect for an added crunch, these gluten-free crackers bring texture and can be an enjoyable munch alongside the creamy goodness of your soup.
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Coconut Cream Swirls: For a touch of luxury, drizzle some coconut cream on top of your soup. It enhances the sweetness while adding a light tropical twist.
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White Wine Pairing: A glass of crisp Chardonnay or a light Pinot Grigio complements the soup’s rich flavors. Their brightness balances the creamy elements beautifully.
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Pumpkin Spice Muffins: For a touch of sweetness, serve with muffins that bring a warm spice aroma, engaging your senses and rounding out the cozy meal experience.
Make Ahead Options
Busy home cooks will love how easy it is to prepare Caramelized Onion Butternut Squash Soup ahead of time, making weeknight dinners a breeze! You can chop the onions, carrots, and celery up to 24 hours in advance, storing them in an airtight container in the refrigerator to keep them fresh. Additionally, you can roast or chop the butternut squash up to 3 days ahead; just be sure to toss it in a bit of lemon juice to prevent browning. When you’re ready to enjoy your soup, simply sauté the prepped vegetables and continue with the remaining steps, and you’ll have a comforting meal ready in no time!
Storage Tips for Caramelized Onion Butternut Squash Soup
Room Temperature: Cool the soup completely before storing—do not leave it out for more than 2 hours to prevent foodborne illness.
Fridge: Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop or in the microwave, adding a splash of broth if needed.
Freezer: This soup can be frozen for up to 6 months. Portion it into freezer-safe containers, leaving space for expansion as it freezes. Thaw in the fridge overnight before reheating.
Reheating: To enjoy the creamy goodness of your Caramelized Onion Butternut Squash Soup, reheat on low heat, stirring occasionally to ensure even warmth throughout.
Tips for the Best Caramelized Onion Butternut Squash Soup
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Patience is Key: Allow onions to caramelize slowly to enhance their sweetness. Rushing this step may result in bitter flavors.
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Fresh Ingredients Matter: Use fresh vegetables to improve the taste and nutrient profile of your Caramelized Onion Butternut Squash Soup. Pre-cut options can lack flavor.
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Blend with Care: When puréeing hot soup, fill your blender only halfway and cover with a towel to prevent steam build-up and splattering.
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Season Gradually: Start with a pinch of salt and pepper, adjusting as needed. This ensures a well-balanced flavor profile without overpowering the dish.
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Experiment with Textures: Feel free to add kale or spinach during the last simmer for added nutrition and a lovely green hue.
Caramelized Onion Butternut Squash Soup Recipe FAQs
What type of onion should I use for the best flavor?
Absolutely! For a deliciously sweet base, I recommend using a medium to large yellow onion. It caramelizes beautifully and brings out a rich flavor that’s perfect for the Caramelized Onion Butternut Squash Soup. If you’re feeling adventurous, try swapping in some red onions for a unique twist.
How should I store leftover soup?
After letting it cool completely, transfer your soup to an airtight container to keep it fresh. You can store it in the refrigerator for up to 3 days. When you’re ready to enjoy it again, simply reheat on the stovetop or in the microwave, adding a splash of broth if it thickens too much.
Can I freeze this soup?
Definitely! This soup freezes wonderfully. Portion it into freezer-safe containers and make sure to leave some space for the soup to expand. It can be stored for up to 6 months. For the best flavor, thaw your soup overnight in the refrigerator before reheating.
What if my onions burn while caramelizing?
Very good question! If your onions start to burn, simply reduce the heat and add a tablespoon of water to loosen up those caramelized bits stuck on the bottom of the pot. Keep stirring frequently and be patient! Perfectly caramelized onions should take about 45-60 minutes on medium heat, so don’t rush it!
Is this soup suitable for someone with dietary restrictions?
Absolutely! This Caramelized Onion Butternut Squash Soup is Whole30 compliant and paleo-friendly, made from 100% real whole foods. Just be mindful of any specific allergies when selecting your ingredients, especially with the broth. If you have a sensitivity to garlic or onions, consider using garlic-infused oil and skip the onions entirely, adding in herbs for flavor instead.
Can I adjust the thickness of the soup?
Of course! If you prefer a thicker soup, let it simmer longer after puréeing, allowing more liquid to evaporate. Alternatively, if it’s too thick for your liking, simply stir in a bit more bone broth or water until it reaches your desired consistency. Enjoy playing with the textures!
Creamy Caramelized Onion Butternut Squash Soup for Cozy Evenings
Ingredients
Equipment
Method
- Sauté diced onions in extra virgin olive oil on 'normal' for about 45-60 minutes, stirring occasionally until golden brown.
- Stir in minced garlic, diced carrots, and diced celery. Cook for 3-5 minutes until softened.
- Add butternut squash cubes and bone broth. Mix to combine.
- Secure the lid on the Instant Pot and set to 'pressure cook' for 10 minutes, then manually release.
- Puree the soup using an immersion blender or in a blender in batches.
- Return the puree to the pot and simmer for 10-30 minutes. Season with salt and pepper.