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Roasting the sweet potatoes first brings out their natural sweetness and deepens the flavor of this cozy autumn soup. The edges caramelize in the oven, adding richness that you just can’t get from simmering alone. Once blended with broth, cream, warm spices, and a touch of brown sugar, the result is velvety, comforting, and gently sweet—perfect for chilly days.
This soup is elegant enough for a holiday starter yet simple enough for a weeknight dinner. It reheats beautifully, can be made ahead, and takes well to fun garnishes like fried sage or chopped pecans for a little crunch.
What You’ll Like About This Soup
Cozy and comforting. With roasted sweet potatoes and warm spices, this soup is perfect for cold days.
Velvety smooth texture. Blending the soup creates a luscious, creamy consistency.
Elevated flavor. A hint of sage and brown sugar enhances the sweet and savory balance.
Make-ahead friendly. It reheats beautifully and is ideal for meal prep or holiday menus.
⚠️ Safety Tip for Blending Hot Soup:
- Always let the soup cool slightly before blending. Blend in small batches, filling the blender no more than halfway.
- Remove the center cap from the lid and cover it with a folded kitchen towel to allow steam to escape.
- Hold the lid down firmly while blending to prevent hot liquid from splashing or building pressure.
Ingredient Notes
- Sweet potatoes: Roasting gives them concentrated flavor—dice them fairly evenly so they cook at the same rate.
- Onion & celery: Build the aromatic base for the soup.
- Garlic: Adds depth without overpowering the sweetness.
- Vegetable broth: Keeps the soup lighter, but chicken broth works too.
- Sage, cinnamon & nutmeg: Classic fall flavors that complement sweet potatoes.
- Brown sugar: Optional, but helps balance the earthy notes.
- Half-and-half or cream: Stirred in at the end for richness.
Steps to Make Roasted Sweet Potato Soup
- Heat the oven and line a baking sheet.
- Toss diced sweet potatoes with olive oil, salt, and pepper; roast until tender.
- Sauté onion and celery in a saucepan, then add garlic.
- Add broth, sage, cinnamon, nutmeg, and brown sugar; simmer briefly.
- Add the roasted sweet potatoes and cook until all vegetables are very tender.
- Blend the soup in batches until smooth.
- Return to the pot and stir in the cream.
- Taste, adjust seasoning, and serve with optional garnishes.
Tips for Success
- Cut sweet potatoes into similar-size cubes for even roasting.
- Let the roasted potatoes get light caramelized edges for best flavor.
- Blend carefully—hot liquids expand, so work in small batches.
- Add cream after blending to keep the soup silky and smooth.
Recipe Variations
- Spicy version. Add cayenne pepper or a pinch of chipotle powder.
- Coconut sweet potato soup. Swap cream for coconut milk.
- Ginger variation. Add freshly grated ginger with the garlic.
- Savory herb-forward. Increase the sage or add fresh thyme.
- Apple-sweet potato mix. Roast one chopped apple with the potatoes.
Serving Suggestions
- Serve with crusty bread, dinner rolls, or a grilled cheese sandwich.
- Pair with a fall salad, such as a Waldorf salad or beet salad.
How to Store
Refrigerate: Keep in an airtight container for 3–4 days.
Freeze: Freeze without the cream added, if possible. Thaw and add cream when reheating.
Reheat: Warm gently on the stovetop, adding broth if needed to thin.
Roasted Sweet Potato Soup
Ingredients
- 2 pounds sweet potatoes, peeled and diced (about 6 cups diced)
- Kosher salt and freshly ground black pepper, to taste
- 3 tbsp olive oil, divided use
- 1 cup onion, chopped
- 1 cup celery, chopped
- 1 clove garlic, minced
- 4 cups vegetable broth
- 1 tsp rubbed sage
- ½ tsp cinnamon
- ¼ tsp ground nutmeg
- 2 tbsp brown sugar, light or dark
- 1 ½ cups half-and-half , or light cream
- Optional garnish: fried sage leaves, chives, toasted pecans, or maple syrup
Recommended Equipment
Instructions
- Prep the oven and pan. Heat the oven to 425°F. Line a large rimmed baking sheet with foil.
- Season and roast the sweet potatoes. Toss the diced sweet potatoes with 2 tablespoons of olive oil. Arrange the sweet potatoes on the prepared baking sheet and season with salt and pepper. Roast the sweet potatoes for 30-40 minutes, or until tender.2 pounds sweet potatoes | Kosher salt and freshly ground black pepper | 2 tbsp olive oil
- Sauté the aromatics. Meanwhile, in a large saucepan, sauté the onion and celery in the remaining 1 tablespoon of olive oil until the onion is translucent. Add the garlic and sauté for 30 seconds to 1 minute longer.1 tbsp olive oil | 1 cup onion | 1 cup celery | 1 clove garlic
- Add the broth and seasonings. Add the vegetable broth, the sage, cinnamon, nutmeg, and brown sugar. Bring to a boil. Reduce heat to simmer for 10 minutes.4 cups vegetable broth | 1 tsp rubbed sage | 1/2 tsp cinnamon | 1/4 tsp ground nutmeg | 2 tbsp brown sugar
- Add the roasted sweet potatoes. Add the sweet potatoes to the saucepan and continue cooking until the vegetables are all very tender, about 5 to 10 minutes longer.
- Blend the soup. Blend the hot mixture in 3 to 4 batches in the blender until smooth.* Return the soup to the saucepan and stir in the half-and-half. Heat through. Taste and adjust the seasonings.1 1/2 cups half-and-half
- Garnish. Serve with a garnish of fried sage leaves, chopped chives, a drizzle of maple syrup, or chopped toasted pecans.Optional garnish: fried sage leaves, chives, toasted pecans, or maple syrup
Notes
Nutrition
Disclaimer:
Our nutritional information is based on a third-party application that analyzes the ingredients list to determine the values. The information is meant to be helpful, but should be considered an estimate. Values may differ depending on measurements, brands, serving variations, and database availability.
