Soups & Stews
This sweet potato noodles soup recipe transforms humble ingredients into a velvety, comforting dish that’s both hearty and light. The secret lies in roasting sweet potato ribbons until caramelized, then simmering them in a fragrant broth that captures their natural sweetness.
It’s a vegan-friendly masterpiece that delivers restaurant-quality depth without the fuss—perfect for cozy nights or meal prep.
The process is simpler than it sounds: spiralize sweet potatoes into noodles, roast them until tender and golden, then blend with aromatic vegetables for a silky broth. This method preserves texture while infusing flavor, creating strands that melt in your mouth rather than turn mushy.
The result? A bowl of soup that’s rich, satisfying, and subtly sweet—ideal for those craving warmth without heaviness.
What sets this recipe apart is its versatility. Swap in miso for umami depth, add coconut milk for creaminess, or top with crispy tofu for protein. Serve as-is for a clean, vibrant meal or pair with a sprinkle of chili flakes for a spicy kick.
Every spoonful delivers that perfect balance of earthy sweetness and savory broth—proof that comfort food can be both nourishing and exciting.
Ready in under an hour, this soup is a game-changer for busy weeknights. The roasted sweet potatoes add natural sweetness without sugar, while the broth absorbs all the caramelized flavors.
Whether you’re feeding a family or meal prepping for the week, this recipe delivers restaurant-quality results with minimal effort. Let’s get cooking!
Ingredients for sweet potato noodles soup
Roasted sweet potatoes and aromatic vegetables create this velvety vegan soup.
| Ingredient | Amount | Notes |
|---|---|---|
| Sweet Potatoes 🍠 | 2 large | Organic preferred for sweetness |
| Yellow Onion 🧅 | 1 whole | Yellow or red variety |
| Carrots 🥕 | 3 medium | Baby carrots work too |
| Garlic Cloves 🧄 | 6 cloves | Freshly minced preferred |
| Coconut Milk 🥥 | 1 can | Full-fat for creaminess |
| Fresh Ginger 🌿 | 1 inch | Peeled, grated finely |
| Vegetable Broth 💧 | 4 cups | Low-sodium preferred |
| Olive Oil 🫒 | 2 tbsp | Extra-virgin for flavor |
| Fresh Thyme 🌿 | 1 tbsp | Leaves only, chopped |
| Fresh Cilantro 🌿 | ¼ cup | Stems removed, chopped |
| Lemon Juice 🍋 | 1 tbsp | Freshly squeezed |
| Sea Salt 🧂 | 1 tsp | To taste, adjust |
| Black Pepper 🌶️ | ½ tsp | Freshly ground |
| Red Chili Flakes 🔥 | ½ tsp | Optional for heat |
The sweet potatoes are the star—organic varieties like Jewel or Garnet have the best natural sweetness. Trader Joe's and Whole Foods carry excellent options, but any firm, vibrant sweet potato works. Roasting them first caramelizes the sugars, giving the broth that restaurant-quality depth. For the coconut milk, full-fat is non-negotiable—it adds that luxurious creaminess without dairy. If you're short on time, pre-spiralized sweet potatoes from Trader Joe's save steps without sacrificing texture. Just make sure they're organic to avoid wax coatings.
No fresh thyme? Dried works at one-third the amount, but the flavor won't be the same. Subbing coconut milk? Cashew cream (blended soaked cashews + water) gives a similar richness. The vegetable broth can be homemade (simmer veggie scraps with garlic and onion) or store-bought—just check for low-sodium labels. For extra umami, add 1 tbsp miso paste to the broth. The ginger should be fresh—dried lacks the bright zing. If you're sensitive to heat, skip the chili flakes or use half the amount. The carrots can be swapped for parsnips or butternut squash if you prefer.
This soup tastes even better the next day as flavors meld. Store in an airtight container for 4-5 days in the fridge, or freeze portions for 3 months. For meal prep, portion into containers with a thin layer of coconut milk on top to preserve freshness. The noodles soften when reheated, so add a splash of water or broth when warming. Garnish with fresh cilantro and a squeeze of lemon right before serving—that bright pop of acidity makes all the difference. Double the batch and freeze half for lazy nights.
Why You'll Love This Recipe
- Here’s what sold me: I make a big batch on Sundays, and it’s still delicious by Wednesday. The flavors only get better as the broth reduces, and the noodles hold up perfectly when reheated. Pack it for work, freeze half, or just eat it all—no judgment here.
- No Spiralizer Needed: I’ll admit, I resisted buying a spiralizer for years—until I realized you can just slice sweet potatoes into thick matchsticks for this soup. They soften into silky strands while simmering, and honestly? No one will care (or notice) if they’re not perfect.
- Creamy Without Guilt: That coconut milk doesn’t just add richness—it turns the soup into a velvety hug. The caramelized onions and garlic cloves deepen the flavor, but it’s the sweet potatoes that steal the show, offering natural sweetness that balances the warmth. Between us, this is the kind of comfort food that makes you forget to count calories.
- Lunch for Days: Here’s what sold me: I make a big batch on Sundays, and it’s still delicious by Wednesday. The flavors only get better as the broth reduces, and the noodles hold up perfectly when reheated. Pack it for work, freeze half, or just eat it all—no judgment here.
Step-by-step instructions for sweet potato noodles soup
Transform humble sweet potatoes into silky noodles while building a rich, aromatic broth.
Roast the Sweet Potatoes for Natural Sweetness
Preheat your oven to 425°F and line a baking sheet with parchment paper. Peel the sweet potatoes and cut them into ¼-inch thick half-moons using a mandoline or sharp knife. Toss them with 1 tablespoon of the olive oil, ½ teaspoon of sea salt, and ¼ teaspoon of black pepper until evenly coated.
Spread the sweet potato slices in a single layer on the baking sheet, leaving space between each piece. Roast for 20-25 minutes until they're fork-tender with caramelized edges. The key here is to achieve a balance between softness and slight crispness—they should collapse easily when pierced but still hold their shape. Remove from oven and let cool slightly before processing.
Build the Aromatic Base with Onion and Carrots
While the sweet potatoes roast, heat the remaining 1 tablespoon olive oil in a large pot over medium heat. Add the peeled and diced yellow onion and cook for 5 minutes until softened and translucent. Add the peeled and chopped carrots and continue cooking for another 5 minutes until they begin to caramelize slightly at the edges.
Stir in the minced garlic cloves and grated fresh ginger, cooking for 1 minute until fragrant. This aromatic base forms the flavor foundation of your soup. Don't let the garlic burn—it should smell sweet and inviting, not bitter. The carrots should be tender but still hold their shape, adding natural sweetness to complement the roasted sweet potatoes.
Create the Silky Broth with Coconut Milk and Vegetable Broth
Pour in the 4 cups vegetable broth and bring to a gentle simmer. Add the 1 can coconut milk, stirring to combine. The mixture should be creamy but not overly thick. Let it simmer for 10 minutes to allow the flavors to meld together while keeping the coconut milk from curdling.
Add the chopped fresh thyme leaves and ½ teaspoon red chili flakes (if using), stirring gently. Taste the broth and adjust seasoning with additional sea salt and black pepper as needed. The broth should be rich, slightly sweet from the coconut milk, and balanced with the earthy thyme and subtle heat from the chili flakes. This is your flavor canvas—keep it well-seasoned but not overpowering.
Process the Roasted Sweet Potatoes into Noodles
Transfer the cooled roasted sweet potatoes to a food processor fitted with the shredding or slicing blade. Pulse until you achieve long, thin strands resembling noodles. You want them to be flexible but not completely mushy—think of them as sweet potato "ribbons" rather than puree. If they're too thick, pulse again until you reach the desired consistency.
Add the sweet potato noodles to the simmering broth and stir gently to combine. The noodles should absorb some of the broth's liquid while maintaining their shape. Simmer for an additional 5-7 minutes, stirring occasionally, until the noodles are tender and the soup reaches your desired consistency. The soup should coat the back of a spoon but still be easy to ladle.
Finish with Fresh Herbs and Bright Acid
Remove the soup from heat and stir in the ¼ cup chopped fresh cilantro and 1 tablespoon lemon juice. The cilantro adds a fresh, slightly citrusy note that cuts through the richness of the coconut milk, while the lemon juice brightens the entire dish. Taste one final time and adjust seasoning if needed—this is where you can really fine-tune the balance of flavors.
Ladle the soup into bowls and serve immediately, garnished with additional cilantro if desired. Each spoonful should deliver a perfect harmony of textures—silky broth, tender sweet potato noodles, and a delicate balance of sweet, savory, and slightly spicy flavors. The roasted sweet potatoes bring natural sweetness while the coconut milk adds luxurious creaminess, creating a soup that's both comforting and sophisticated.
Pro Tips For Making Sweet Potato Noodles Soup
- PREP NOODLES FIRST: Peel and spiralize your sweet potatoes before chopping anything else—this saves you from sticky, gummy hands mid-cook. I learned this the hard way when my noodles sat in a watery pile while I finessed onions.
- SWEAT ONIONS LOW: Cook onions on medium-low for 8–10 minutes until deeply softened and translucent—no browning. High heat turns them bitter, and you’ll regret it when the coconut milk can’t mask the harshness.
- SKIP THE RAW GARLIC: Sauté minced garlic for 30 seconds until fragrant but not golden—raw garlic burns easily and adds bitterness. My grandmother swore by this, and she was right: it’s the thing that matters most for flavor balance.
- STIR COCONUT MILK IN: Whisk in coconut milk last and simmer for 2–3 minutes—this prevents curdling and keeps the noodles from turning mushy. I was skeptical until I tried it: the soup stays creamy and cohesive.
Pro cooking tips for perfect results
Roasting Perfection
The key to sweet, caramelized sweet potato noodles lies in proper roasting. Cut sweet potatoes into ¼-inch thick slices using a mandoline for consistency—I love the OXO Good Grips model. Spread them in a single layer on your baking sheet with space between each piece to ensure even browning.
Roast at 425°F for 20-25 minutes until fork-tender but still holding shape. Over-roasting turns them mushy, while under-roasting leaves them raw-tasting. 🌱
Broth Consistency Tricks
Coconut milk can curdle if boiled too vigorously. Simmer your broth on medium-low heat and stir constantly when adding it to prevent separation. For extra silkiness, blend ½ cup of the broth with the coconut milk before adding it back to the pot.
This creates a velvety base without altering the noodle texture. A splash of vegetable broth (about ¼ cup) at the end helps adjust thickness if needed.
Noodle Texture Secrets
Your food processor blade makes all the difference. Use the slicing/shredding disc for long strands, not the pulsing blade which creates puree. Process the cooled sweet potatoes in batches if needed—I find 2 batches of 1 cup each works best in my Ninja SP101 processor.
Pulse until you get ¼-inch wide ribbons, then immediately add them to the broth to prevent sticking. The residual heat helps them soften faster in the simmering liquid.
Flavor Layering Technique
Build flavors in stages for maximum impact. First roast the sweet potatoes, then sauté onions and carrots until deeply caramelized (about 15 minutes total). Add garlic and ginger last to preserve their bright flavors.
The coconut milk should infuse for at least 10 minutes of simmering to develop its creamy depth. Finish with fresh herbs and acid (cilantro + lemon) right before serving—this brightens all the rich flavors. 💛
Equipment Shortcuts
No mandoline? Use a sharp chef's knife and cut sweet potatoes against the grain for thinner slices. For processing, a handheld spiralizer like the OXO Good Grips works well—just be patient with the smaller batches.
No food processor? Pulse in a high-powered blender (like the Vitamix) for 10 seconds at a time. The key is consistency—thicker strands need longer simmering time to soften properly.
Make-Ahead Pro Tips
This soup actually tastes better the next day as flavors meld. Store in an airtight container with a thin layer of coconut milk on top to preserve freshness. For reheating, warm on low heat with a splash of water or broth—never microwave directly as it makes noodles mushy.
I like to reheat portions in a small saucepan for 3-5 minutes until steaming, then stir in fresh cilantro and lemon juice to revive the flavors. 🔥
Nutrition facts
Frequently asked questions
Can I use regular sweet potatoes instead of organic?
Yes, but you may need to wash non-organic sweet potatoes thoroughly to remove any wax coatings. Organic varieties have naturally sweeter flesh and cleaner skins, but conventional sweet potatoes work fine for this recipe. Just peel them carefully to avoid any bitter wax flavors.
What if I don't have a food processor for the noodles?
No problem! Use a handheld spiralizer or even a sharp knife to cut the roasted sweet potatoes into thin strands. For extra help, grate them first with a box grater, then stretch the pieces into noodle-like shapes with your hands. The texture will be slightly different but still delicious.
Can I make this soup without coconut milk?
For a dairy-free alternative, blend ½ cup soaked cashews with ½ cup water until smooth. For a lighter option, use ¼ cup Greek yogurt or coconut yogurt (if not strictly vegan). The soup will still be creamy, though the texture will differ slightly. Adjust seasoning as needed.
How do I prevent the coconut milk from curdling?
Always add coconut milk to the simmering broth (never boiling water) and stir constantly. For extra insurance, blend ½ cup broth with the coconut milk first, then return it to the pot. Keep heat at medium-low and avoid rapid temperature changes. A splash of cold water can also help stabilize the mixture.
Is this soup kid-friendly?
Yes, but with a few tweaks! Skip the chili flakes and reduce garlic/ginger to 2 cloves and ½ inch respectively. Add a pinch of cinnamon or nutmeg for natural sweetness kids love. Serve with a side of crusty bread to make it more filling. The natural sweetness of the roasted sweet potatoes makes it appealing to little ones.