Looking for an easy, plant-based dinner? This vegan japchae with kelp noodles features roasted squash, mushrooms, and a savory-sweet sesame sauce. Quick, gluten-free, and weeknight-friendly, it’s perfect for busy evenings or meal prep.
🥢 Vegan Japchae with Kelp Noodles
This vegan japchae is a quick, weeknight-friendly take on the classic Korean noodle dish. Made with roasted squash, mushrooms, and tender kelp noodles in a savory-sweet sesame sauce, this easy veggie japchae comes together in no time, making it a reliable choice for busy weeknights. Roasting the vegetables brings out their natural sweetness, while the noodles soak up the sauce for a light, flavorful, and gluten-free meal that works beautifully for both weeknight dinners and make-ahead lunches.
✨ Why You’ll Love This Vegan Japchae
- Quick and easy weeknight-friendly — minimal stove time 🕒
- Vegan and gluten-free 🌱
- Light, with plenty of savory depth
- Vegetable-focused flavor, thanks to roasted squash and mushrooms
- Simple to prepare, with no noodle boiling required
- Works well warm or at room temperature, making it great for make-ahead meals
🥕 Ingredients for Vegan Japchae
For the Japchae
- Kelp noodles – Softened with lemon and salt; no cooking required
- Kabocha squash – Roasted until tender and lightly caramelized
- Shiitake and cremini mushrooms – Roasted for depth and umami
- Baby spinach – Gently wilted at the end
- Green onions and garlic – For aroma and balance
- Coconut oil – Used sparingly for roasting and sautéing
- Coconut aminos – Adds savory depth without overpowering
For the Japchae Sauce
- Coconut aminos
- Coconut nectar
- Toasted sesame oil
- Fresh garlic
🍜 Kelp Noodles vs. Traditional Japchae Glass Noodles
Traditional japchae uses sweet potato glass noodles (dangmyeon), which are starch-based and require boiling. Kelp noodles, by contrast, are made from sea vegetables, don’t require cooking, and are often easier to find in natural food stores. They keep the dish light and lower in carbs while soaking up the sauce beautifully. This recipe works with either noodle, but kelp noodles make the prep faster and the meal naturally lower-carb.
🍳 How to Make Vegan Japchae (Step-by-Step)
1. Soften the Kelp Noodles
Rinse the kelp noodles and place them in a large bowl. Cover with filtered water, add the lemon juice and salt, and gently stir. Set aside for 15–20 minutes, until the noodles soften. Rinse again and drain well.
2. Roast the Vegetables
Preheat the oven to 425°F.
Toss the kabocha squash with ½ tablespoon coconut oil and a pinch of salt and pepper. Arrange in a single layer on a parchment-lined baking sheet and roast for about 20 minutes, until tender.
On a separate parchment-lined baking sheet, toss the mushrooms with 1 tablespoon coconut oil, coconut aminos, grated garlic, and a pinch of salt and pepper. Roast for about 20 minutes, until tender and lightly browned.
3. Assemble the Vegan Japchae
Heat the remaining ½ tablespoon coconut oil in a large skillet over medium heat. Add the green onions and spinach and cook, stirring, until the spinach is just wilted, about 2 minutes.
Add the drained kelp noodles, roasted squash, and mushrooms to the skillet. Pour in the sauce and gently toss everything together. Reduce the heat slightly and cook for another 2 minutes, until warmed through and evenly coated.
🔄 Vegan Japchae Variations & Add-Ins
- Add protein: Pan-seared tofu or edamame
- More vegetables: Bell peppers, zucchini, red cabbage, or snow peas 🫑
- Spicy option: Add chili flakes for gentle heat 🌶️
💡 Tips for the Best Vegan Japchae
- Roast vegetables separately to prevent steaming and preserve flavor
- Rinse kelp noodles well after soaking to remove excess salt and lemon
- Vegan japchae tastes great warm or at room temperature
- Minimal stove time makes it perfect for weeknight dinners
❓ Vegan Japchae FAQ
Is vegan japchae gluten-free?
Yes. This recipe is naturally gluten-free when made with kelp noodles and coconut aminos.
What noodles are best for vegan japchae?
Sweet potato glass noodles are traditional, while kelp noodles offer a starch-free, no-cook alternative.
Can I add protein to vegan japchae?
Yes. Tofu or edamame can be added without overpowering the vegetables or sauce.
🥡 Make-Ahead, Storage & Reheating
Store vegan japchae in an airtight container in the refrigerator for up to 3 days. Bring to room temperature before serving or gently reheat in a skillet with a splash of water.
🌿 Wrap Up
This vegan japchae is a simple, vegetable-centered dish that balances savory, sweet, and sesame flavors without feeling heavy. Roasting the squash and mushrooms adds depth, while kelp noodles keep the dish light and lower in carbs.
It’s quick, weeknight-friendly, and easy to assemble, making it perfect for busy evenings, casual entertaining, or make-ahead meals. Whether you’re familiar with japchae or trying it for the first time, this version offers a relaxed, vegetable-focused way to enjoy a classic Korean dish.
More Kelp Noodle Recipes:
Veggie Japchae
Vegetable Japchae is a gluten-free and easy noodle dish made with a medley of mushrooms, spinach and squash in a savory-sweet sauce.
Ingredients
- One 12 oz/340g package of kelp noodles
- 2 Tablespoons/30ml lemon juice
- 1 teaspoon fine sea salt
- ½ a small kabocha squash, seeds removed and cut into 1-inch pieces
- 2 Tablespoons/30ml coconut oil, in liquid state (divided use)
- Pinch of sea salt
- Pinch of freshly ground black pepper
- 6oz/170g shiitake (stems removed) and cremini mushrooms, rinsed and sliced
- 1 Tablespoon/15ml coconut aminos
- 1 clove of garlic, finely grated
- 5oz/142g baby spinach leaves
- 2 green onions, chopped
For the sauce:
- 2 Tablespoons/30ml coconut aminos
- 1 Tablespoon/ 15ml coconut nectar
- 2 teaspoons/5ml toasted sesame oil
- 1 clove of garlic, finely grated
Instructions
- Preheat the oven to 425° F.
- Rinse kelp noodles and place in a large bowl. Fill bowl with enough filtered water to just cover the noodles and add the lemon juice and salt. Stir gently to combine and set aside for 15-20 minutes until noodles are soft.
- On a parchment lined baking sheet, toss the squash with ½ Tablespoon of the coconut oil and a pinch of salt and pepper. Arrange in a single layer and roast for 20 minutes until tender.
- On a separate parchment lined baking sheet, toss the sliced mushrooms with another 1 Tablespoon coconut oil, coconut aminos, grated garlic and another small pinch of salt and pepper. Arrange in a single layer and roast for 20 minutes until tender.
- Rinse softened noodles again and drain well.
- Heat the remaining ½ Tablespoon of coconut oil in a large skillet over medium heat. Add the scallions, and spinach and cook, stirring, until spinach is wilted, about 2 minutes. Add rinsed and drained noodles, along with sauce and roasted squash and mushrooms.
- Turn heat down and cook tossing noodles with sauce and vegetables for another 2 minutes until well combined and heated through.
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Nutrition Information:
Yield:
4Serving Size:
1Amount Per Serving: Calories: 231Total Fat: 16gSaturated Fat: 12gTrans Fat: 0gUnsaturated Fat: 3gCholesterol: 0mgSodium: 966mgCarbohydrates: 21gFiber: 4gSugar: 11gProtein: 4g
Nutritional information for recipes contained on this website, such as calories, fat, carbs, etc. are only estimates and are not guaranteed to be accurate.
Sylvie Shirazi is the recipe developer and food photographer behind Gourmande in the Kitchen. For the last 10 years she's been making eating more healthfully easy and accessible with gluten-free, grain-free, paleo and vegan recipes that are free from processed ingredients.
Asha Shivakumar says
Such a stunner and simple meal to satisfy the noodle craving.
Pretty!!
Kankana says
Are those similar to glass noodles? Looks delicious either way 🙂
Sylvie says
Yes but the noodles are made with kelp instead of starch which makes them low carb and low cal!