Slow Cooker Fall Harvest Soup starts with butternut squash, carrots, and parsnips roasted until tender and lightly browned. The vegetables then cook slowly with onion, garlic, vegetable broth, cinnamon, and nutmeg until everything is soft enough to blend.
The soup turns out thick and smooth, with a mild sweetness from the roasted vegetables and a warm hint of spice. It is an easy choice for a chilly fall lunch or dinner.
Why You’ll Keep Making This Recipe
- Easy Ingredient List: Most of the ingredients are basic vegetables and pantry staples.
- Good Use of Fall Produce: Squash, carrots, and parsnips work especially well together in this soup.
- Mostly Hands-Off: After the vegetables are roasted and added to the slow cooker, there is very little work left.
- Makes Six Servings: One batch gives you plenty for a family meal or leftovers.
- Easy to Blend: An immersion blender makes quick work of the cooked vegetables.
- Naturally Vegetarian: Vegetable broth keeps the soup meat-free without needing special ingredients.
Key Ingredients That Matter
- Butternut Squash: This gives the soup its creamy body and natural sweetness. Cut the squash into similar-sized cubes so it cooks evenly.
- Carrots: Carrots add sweetness and a little earthiness. Fresh, firm carrots are best for roasting.
- Parsnips: Parsnips have a slightly sweet, earthy taste that works well with the squash and carrots.
- Onion and Garlic: These add a savory base to balance the sweeter vegetables.
- Cinnamon and Nutmeg: A little of each gives the soup its warm fall flavor without overpowering the vegetables.
- Vegetable Broth: Broth adds more flavor than water. Choose a low-sodium variety if you want more control over the salt.
Chef’s Tip: Don’t pull the vegetables from the oven as soon as they become soft. Let them pick up some brown edges first. That extra roasting time gives the soup a deeper taste.
Slow Cooker Fall Harvest Soup
This fall-inspired soup is made by slow cooking a mixture of caramelized squash, root vegetables, and aromatic herbs until tender and velvety. The final dish has a smooth, thick broth with vibrant seasonal flavors and a fragrant, comforting aroma. It features a hearty texture with soft vegetables infused with spices, perfect for meals.
Equipment
- Slow Cooker
- Cutting Board
Ingredients
- 1 pound butternut squash peeled and cubed
- 2 large carrots peeled and chopped
- 2 parsnips parsnips peeled and chopped
- 1 medium onion diced
- 3 cloves garlic minced
- 4 cups vegetable broth
- 1 teaspoon ground cinnamon
- 0.5 teaspoon ground nutmeg
- 1 teaspoon olive oil for roasting
- to taste salt and pepper
Instructions
- Preheat your oven to 400°F (200°C). Toss the cubed butternut squash, carrots, and parsnips with olive oil, salt, and pepper. Spread them evenly on a baking sheet and roast for 25-30 minutes, until tender and slightly caramelized.
- While the vegetables roast, dice the onion and mince the garlic. Transfer the roasted vegetables to the slow cooker, then add the onion and garlic.
- Add the vegetable broth, cinnamon, nutmeg, salt, and pepper to the slow cooker. Stir gently, cover, and cook on low for 6-8 hours, until the vegetables are very soft.
- Use an immersion blender to blend the soup directly in the slow cooker until smooth and velvety. Alternatively, blend it carefully in batches using a regular blender, then return the soup to the slow cooker.
- Taste and adjust the seasoning with salt and pepper. Add a little extra cinnamon or nutmeg if desired, then serve hot with a drizzle of olive oil or fresh herbs.
Notes
Roasting the vegetables enhances their sweetness and adds depth to the flavor. Adjust spices according to your taste for a personalized touch.
Nutrition Information
Estimated per serving based on 6 servings. Values will vary depending on the vegetables, broth, and amount of oil used.
| Nutrient | Amount |
|---|---|
| Calories | 180 kcal |
| Carbohydrates | 31 g |
| Protein | 4 g |
| Fat | 5 g |
| Fiber | 7 g |
| Sugar | 11 g |
| Sodium | 520 mg |
Common Mistakes to Avoid
- Crowding the Baking Sheet: Spread the vegetables out so they roast instead of steaming.
- Uneven Chunks: Keep the vegetables close in size so they finish roasting around the same time.
- Too Much Broth: Adding extra liquid can make the soup thinner than intended.
- Under-Roasting: Pale, barely cooked vegetables will not have the same depth as properly browned ones.
- Blending Too Soon: Wait until the vegetables are very soft after slow cooking before blending.
- Skipping the Final Taste: Check the seasoning after blending and add salt or pepper as needed.
Easy Ways to Change It Up
- Add Apple: A chopped apple can add another layer of natural sweetness.
- Use Pumpkin: Replace part of the squash with pumpkin for a stronger fall flavor.
- Add Ginger: Fresh ginger works nicely with the sweet vegetables and warm spices.
- Make It Smoky: Add a little smoked paprika for a different direction.
- Add Fresh Herbs: Thyme or rosemary can give the soup a more savory taste.
- Add Heat: A pinch of cayenne or red pepper flakes gives the soup some kick.
- Try Coconut Milk: Replace some of the broth with unsweetened coconut milk for a richer version.
More Soup Recipes to Try
- Roasted Butternut Squash Soup
- Roasted Cauliflower & Garlic Soup
- Butternut Squash and Ginger Soup
- Slow Cooker Fall Chicken Stew
- Roasted Fennel and Pumpkin Autumn Soup
Best Ways to Store Leftovers
- Make Ahead: The soup can be prepared ahead and cooled before being transferred to airtight containers.
- Refrigerator Storage: Keep leftovers refrigerated for up to 4 days.
- Freezer Storage: Freeze the soup in freezer-safe containers for up to 3 months.
- Reheating: Warm it slowly on the stovetop or in the microwave, stirring between intervals.
- Freshness Tip: If freezing, leave a little room at the top of the container for expansion.
Common Questions About This Recipe
- Can I use frozen butternut squash?
Yes. Frozen squash can be used, although fresh squash will give you better browning during the roasting step. - Can I use other root vegetables?
Yes. Turnips, rutabaga, or additional carrots can be used in place of some of the vegetables listed. - Can I make this soup without a slow cooker?
Yes. After roasting the vegetables, simmer them with the onion, garlic, broth, and spices in a large pot until everything is very soft, then blend. - What if my soup is too thick?
Stir in a little extra vegetable broth until it reaches the consistency you like. - What if my soup is too thin?
Let it simmer uncovered in a pot for a few minutes to allow some of the liquid to evaporate. - Can I blend the soup completely smooth?
Yes. Blend longer for a silky texture, or stop earlier if you prefer a little texture from the vegetables. - Can I use ground ginger instead of fresh ginger in a variation?
Yes. Start with a small amount since ground ginger is more concentrated than fresh ginger. - Why does my soup taste too sweet?
The roasted squash, carrots, and parsnips naturally become sweeter as they cook. A little extra salt or a small splash of apple cider vinegar can help balance the sweetness.
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