Irresistible Butternut Squash Sweet Potato Soup

Posted on August 14, 2025 ·

by Bellie

Butternut Squash Sweet Potato Soup

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When the air turns crisp and leaves start to fall, nothing feels more comforting than a bowl of butternut squash sweet potato soup. This vegan-friendly recipe is a perfect example of savory fall soups that are both healthy and deeply satisfying. The combination of roasted butternut squash and sweet potatoes creates a naturally sweet and velvety base, balanced with warm spices. If you enjoy smooth, comforting soups, you might also love our Roasted Sweet Potato Soup.

Why This Is One of the Best Butternut Squash Sweet Potato Soup

This soup ticks all the boxes—it’s flavorful, nutrient-dense, and easy to prepare. Roasting the vegetables enhances their natural sweetness, while spices like cinnamon, nutmeg, and paprika create a cozy flavor profile. It’s also adaptable—you can make it ahead, freeze it, and reheat it for quick weeknight dinners. For another seasonal favorite, check out our Hatch Green Chili Soup.

Who Will Love This Butternut Squash Sweet Potato Soup

This recipe is perfect for:

  • Anyone looking for healthy squash soup that’s vegan and dairy-free.
  • Home cooks who love fall soups with butternut squash as a base.
  • Busy families who want easy autumn soup recipes that can be prepped ahead of time.

If you’re a fan of nutrient-rich, plant-based dishes, our Healthy Mexican Skillet is another great option.

Essential Ingredients for the Butternut Squash Sweet Potato Soup

  • 1 medium butternut squash (about 2 pounds), peeled and cubed
  • 2 medium sweet potatoes, peeled and cubed
  • 2 tbsp olive oil
  • 1 large onion, chopped
  • 3 cloves garlic, minced
  • 4 cups vegetable broth
  • 1 tsp cinnamon
  • 1/2 tsp nutmeg
  • 1/2 tsp smoked paprika (optional for depth)
  • Salt and pepper, to taste
  • 1/2 cup coconut milk (optional for extra creaminess)

Choosing the Perfect Butternut Squash for Roasting

Pick a squash that feels heavy for its size with firm skin. Smaller squashes tend to be sweeter, while larger ones have a milder flavor.

Sweet Potatoes for Extra Creaminess and Flavor

Sweet potatoes add body and a rich, natural sweetness, making this one of the best squash soup recipes for fall.

Spices and Seasonings for Rich, Cozy Flavors

Warm spices like cinnamon and nutmeg bring a comforting aroma, while smoked paprika adds subtle depth.

Step-by-Step Preparation for Butternut Squash Sweet Potato Soup

Roasting the Vegetables for Depth of Flavor

  1. Preheat oven to 400°F (200°C).
  2. Toss butternut squash and sweet potato cubes with 1 tbsp olive oil, salt, and pepper.
  3. Spread on a baking sheet and roast for 25–30 minutes until tender and slightly caramelized.

Blending for a Smooth and Creamy Texture

  1. In a large pot, heat remaining olive oil and sauté onion until soft.
  2. Add garlic, roasted vegetables, and vegetable broth.
  3. Simmer for 10 minutes, then blend with an immersion blender until smooth.

Adjusting Seasonings for the Perfect Taste

Add cinnamon, nutmeg, smoked paprika, and adjust salt and pepper to taste. Stir in coconut milk if desired for creaminess. For another creamy, plant-based dish, see our Baked Potato Soup Recipe.

Kitchen Equipment You’ll Need for This Butternut Squash Sweet Potato Soup

  • Chef’s knife
  • Vegetable peeler
  • Large baking sheet
  • Large soup pot
  • Immersion blender or countertop blender

Tips and Tricks for the Best Squash Soup Every Time

  • Roast vegetables instead of boiling them for richer flavor.
  • Add a splash of lemon juice before serving for brightness.
  • Use homemade vegetable broth for the best taste.

Common Mistakes to Avoid When Making Fall Soups with Butternut Squash

  • Overcrowding the baking sheet—this steams rather than roasts the vegetables.
  • Adding too much liquid early—start with less and adjust for desired thickness.
  • Not seasoning at each step—layering flavors is key.

Serving and Presentation Ideas for Soup Fall Recipes

Serve in deep bowls with a swirl of coconut milk and a sprinkle of toasted pumpkin seeds. For a side dish, try our Cucumber Dill Salad.

Recipe Variations and Substitutions for Different Tastes

  • Spicy: Add cayenne pepper or chili flakes.
  • Herby: Add fresh sage or thyme while simmering.
  • Protein Boost: Stir in cooked lentils for a heartier meal.

How to Store and Reheat Butternut Squash Sweet Potato Soup

Cool completely before storing in an airtight container. Keep in the refrigerator for up to 5 days or freeze for up to 3 months. Reheat gently on the stovetop.

Perfect Pairings for Butternut Squash Soup Roasted

This soup pairs beautifully with crusty bread, grain salads, or light vegetable sides. For another fall-friendly pairing, see our Kale Caesar Pasta Salad Recipe.

Frequently Asked Questions About Healthy Squash Soup

Can I use pre-cut butternut squash?
Yes—it saves prep time and works just as well.

Can I skip the sweet potatoes?
You can, but you’ll lose some sweetness and creaminess.

Is this soup freezer-friendly?
Absolutely—just thaw overnight in the fridge before reheating.

Conclusion – Why This Is the Best Butternut Squash Soup for Fall

This butternut squash sweet potato soup is everything you want in easy autumn soup recipes—rich flavor, simple preparation, and wholesome ingredients. It’s perfect for cozy nights in, meal prep, or impressing guests at a fall gathering. If you’re ready to explore more soup fall recipes, visit our full recipe collection and discover comforting favorites like our Healthy Mexican Skillet.

Call to Action – Share and Subscribe for More Easy Autumn Soup Recipes

If you enjoyed this recipe, share it with fellow soup lovers and subscribe for more fall soups with butternut squash and seasonal dishes.

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Butternut Squash Sweet Potato Soup – A Cozy Autumn Favorite


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  • Author: Bellie
  • Total Time: 50–55 minutes
  • Yield: 6 servings 1x
  • Diet: Vegan

Description

This cozy, vegan-friendly butternut squash sweet potato soup blends roasted squash and sweet potatoes with warm spices for a silky, naturally sweet bowl of comfort. It’s make-ahead friendly, freezer-friendly, and perfect for crisp fall evenings.


Ingredients

Scale
  • 1 medium butternut squash (about 2 lb), peeled and cubed
  • 2 medium sweet potatoes, peeled and cubed
  • 2 tbsp olive oil, divided
  • 1 large onion, chopped
  • 3 cloves garlic, minced
  • 4 cups vegetable broth
  • 1 tsp cinnamon
  • 1/2 tsp nutmeg
  • 1/2 tsp smoked paprika (optional)
  • Salt and black pepper, to taste
  • 1/2 cup coconut milk (optional, for extra creaminess)

Instructions

  1. Roast veggies: Heat oven to 400°F (200°C). Toss squash and sweet potato cubes with 1 tbsp olive oil, salt, and pepper. Spread on a baking sheet and roast 25–30 minutes until tender and lightly caramelized.
  2. Sauté aromatics: In a large pot, warm remaining 1 tbsp olive oil over medium heat. Sauté onion until soft. Add garlic and cook 30–60 seconds until fragrant.
  3. Simmer: Add roasted vegetables and vegetable broth. Simmer 10 minutes.
  4. Blend: Use an immersion blender to purée until smooth (or carefully blend in batches). Return to pot if needed.
  5. Season & finish: Stir in cinnamon, nutmeg, and smoked paprika (if using). Adjust salt and pepper. For extra creaminess, stir in coconut milk. Warm through and serve.

Notes

  • Flavor boost: Roasting concentrates sweetness; homemade broth gives the best depth.
  • Brightness: Add a small splash of lemon juice before serving to lift flavors.
  • Consistency: Start with less broth and add to reach your preferred thickness.
  • Avoid: Overcrowding the baking sheet (veggies will steam), adding too much liquid early, and skipping seasoning at each step.
  • Variations: Spicy—add cayenne or chili flakes; Herby—simmer with sage or thyme; Protein—stir in cooked lentils.
  • Serving ideas: Swirl with coconut milk and top with toasted pumpkin seeds; pair with crusty bread or a simple salad.
  • Storage: Refrigerate up to 5 days or freeze up to 3 months; reheat gently on the stovetop.
  • Prep Time: 15 minutes
  • Cook Time: 35–40 minutes
  • Category: Soup
  • Method: Roasted & Stovetop
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving

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