Vegetarian Japchae (Korean Sweet Potato Noodles)

This vegetarian japchae is a simple, family-friendly version of the classic Korean glass noodle dish. You’ll get those signature chewy noodles and savory-sweet flavor, just with a streamlined method that makes it doable any night of the week.

If you’ve ever had japchae, you know… it’s one of those dishes that feels special but is actually so simple once you know how to make it.

This vegetarian japchae is inspired by how my mom but adapted for real life as a busy mom. You’ll still get those chewy, glossy noodles and that sweet-savory flavor… just without the extra steps of cooking every ingredient separately.

It’s the kind of dish that works for everything! Quick dinner, meal prep, or something a little different to share with family.

What Is Vegetarian Japchae?

Japchae is a classic Korean dish made with dangmyeon (sweet potato glass noodles) tossed with vegetables and a savory-sweet soy sauce.

Traditional versions often include beef, but this vegetarian japchae skips the meat while still delivering all the flavor and texture that makes the dish so loved.

The noodles are naturally chewy and slightly springy, and the sesame-soy sauce ties everything together in the most satisfying way.

Key Ingredients

• Korean sweet potato noodles – also called dangmyeon, Korean vermicelli or glass noodles. Made from sweet potato starch, these noodles, once cooked, are chewy and springy. You will easily find them at Asian grocery stores.
• Fresh vegetables – While you can add whatever veggies you wish, the most popular ones include onion, carrots, and red bell peppers.
• Shiitake mushrooms – this is a must in my opinion as it provides a meaty flavor to the dish.
• Japchae sauce – a combination of soy sauce, sesame oil, and brown sugar or honey to create the perfect balance of sweet and savory notes
• If you want to make this more filling, you can add: Tofu (pan-fried or baked), edamame, or soft scrambled egg strips (for vegetarian, not vegan)

How to Make the Easiest Vegetarian Japchae

One rule that my mom stressed is to cook the colorful vegetables separately so that each and every ingredient retains its maximum flavor, color, and texture without blending with the other ingredients.

BUT as a busy mom of two littles, time is a precious commodity, so I came up with my shortcut—One-Pot Japchae. This is how I usually make it, and guess what? When I made it for my mom, even she was impressed!

Here’s how to make it!

Step 1: In a large pan, boil the sweet potato noodles for 6–8 minutes until they’re soft and chewy (not al dente!). Drain, rinse under cold water, and set aside. In the same pan, wipe it down and heat 1 tablespoon of sesame oil. Add thinly sliced onions and julienned carrots, and stir-fry until softened.

Step 2: Pour in japchae sauce (recipe at the bottom of the post), 1/4 cup of water, then add the cooked noodles. Let the mixture come to a gentle boil, allowing the noodles to soak up the flavor.

Step 3: Add the sliced mushrooms and fresh spinach. Cover the pan to let everything steam together for a couple of minutes.

Step 4: Drizzle with more sesame oil and sprinkle with sesame seeds for that nutty finish.

Serving Suggestions

Japchae is a versatile dish that can be enjoyed warm, at room temperature, or cold!

Here are some suggestions:

• Main meal – enjoy with a side of kimchi.
• Side dish – pairs especially well with bulgogi, mandu (Korean dumplings), and vegetable pancakes.
• Bento Box – For a well-rounded meal on the go, you can include alongside other items like rice, protein, and additional vegetable sides. Here are more delicious bento box lunch ideas.
• Cold noodle salad – garnish with some fresh herbs like cilantro or green onion. Serve alongside miso tofu!

Storage Suggestions

Transfer leftovers to an airtight container and refrigerate for 2-3 days. Reheat in a pan on the stovetop over medium heat. Add a splash of water to prevent the noodles from drying out and stir-fry until heated through.

You can also microwave. Note that reheated japchae will be slightly softer in texture compared to when freshly cooked. It will still be delicious though!

Vegetarian Japchae FAQs

More Korean Recipes

Instant Pot Korean Chicken and Potatoes

Jumeokbap (Korean Rice Balls)

Korean Radish Soup (Muguk)

Non-Spicy Korean Tofu Soup (Sundubu Jjigae)

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4.84 from 6 votes

Vegetarian Japchae

By: Min Kwon | MJ and Hungryman

Vegetarian japchae made simple. Chewy Korean glass noodles tossed with veggies in a savory-sweet sauce. It's easy, flexible, and perfect for busy weeknights.

Prep Time: 20 minutes minutes

Cook Time: 20 minutes minutes

Total Time: 40 minutes minutes

Servings: 4 -6

Ingredients 

1x2x3x

• ▢ 6 ounces dried Korean sweet potato vermicelli noodles, dangmyeon
• ▢ 1 teaspoon sesame oil
• ▢ 1 tablespoon neutral oil
• ▢ 1 small onion, sliced
• ▢ 1 carrot, peeled and shredded (I used a pre-shredded one)
• ▢ 6 dried shitake mushrooms, soaked in warm water and cut into matchstick strips
• ▢ 1 bunch of spinach
• ▢ 4 tablespoons low-sodium soy sauce
• ▢ 1 tablespoon oyster sauce (optional)
• ▢ 1 tablespoon brown sugar or maple syrup or honey
• ▢ 2 tablespoon sesame oil
• ▢ salt
• ▢ toasted sesame seeds

Instructions 

• In a pot, bring water to a boil. Add spinach and cook for a few seconds, until the spinach has wilted. Remove immediately and rinse in cold water. Don't discard the water. You're going to use it for the noodles.

  Drain and gently squeeze out all the water from spinach. Form into a ball, then using scissors, cut it in half. Combine spinach with 1 teaspoon of sesame oil and pinch of salt. Set aside.
• Add noodles to the pot and and cook for 6-8 minutes until softened and chewy. It should NOT be al dente! Drain and rinse under cold water. Using scissors, cut the noodles into shorter lengths, about 8 inches. Toss with 1 teaspoon sesame oil and set aside.
• In a small bowl, mix soy sauce, sugar, and sesame oil together until sugar dissolves. Set aside.
• Heat 1 teaspoon of neutral oil in a large skillet over medium high heat. Add onion. Stir-fry for about 2 minutes, or until onion is slightly translucent. Remove from pan.
• In the same skillet, repeat the whole process with carrots and mushrooms.
• In a large mixing bowl, add the noodles and all the vegetables. Pour in the soy sauce mixture. Using your hands toss until all the ingredients are coated evenly with the sauce. Taste and season with salt, if needed. Add the toasted sesame seeds and a drizzle of sesame oil. Serve immediately.

Notes

Transfer leftovers to an airtight container and refrigerate for 2-3 days. Reheat in a pan on the stovetop over medium heat. Add a splash of water to prevent the noodles from drying out and stir-fry until heated through.

Nutrition

Calories: 259kcal | Carbohydrates: 41g | Protein: 3g | Fat: 10g | Saturated Fat: 1g | Sugar: 6g

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