Stir-Fried Udon Noodles with Spicy Sesame-Ginger Sauce and Baby Bok Choy

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Thick udon noodles tossed in a savory, spicy sesame-ginger sauce with tender baby bok choy and scallions for a flavorful vegetarian stir fry. This Asian Fusion-inspired noodle recipe (vegetarian), ready in about 20 minutes, pairs fresh udon noodles, baby bok choy, scallions for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 10 min Serves 4 Asian Fusion cuisine 420 cal/serving
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Ingredients

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Instructions

  1. Step 1: Bring a large pot of water to boil and cook 12 oz fresh udon noodles for 2-3 minutes until just tender, then drain and rinse under cold water to stop cooking.
  2. Step 2: In a small bowl, whisk together 3 tbsp soy sauce, 1 tbsp rice vinegar, 1 tbsp grated fresh ginger, 3 minced garlic cloves, 1 tbsp gochujang, and 1 tsp brown sugar until smooth.
  3. Step 3: Heat 1 tbsp vegetable oil and 2 tbsp sesame oil in a large wok or skillet over medium-high heat until shimmering. Add 3 halved baby bok choy and 4 sliced scallions, stir-frying for 3-4 minutes until bok choy stalks are tender but leaves are still bright green.
  4. Step 4: Add the drained udon noodles to the wok and pour the spicy sesame-ginger sauce over top. Toss continuously for 2 minutes until sauce thickens slightly and evenly coats the noodles and vegetables.
  5. Step 5: Remove from heat and sprinkle with 1 tbsp toasted sesame seeds before serving.

Frequently asked questions

How long does Stir-Fried Udon Noodles with Spicy Sesame-Ginger Sauce and Baby Bok Choy take to make?

Total time is about 20 minutes (10 min prep + 10 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Stir-Fried Udon Noodles with Spicy Sesame-Ginger Sauce and Baby Bok Choy?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep fresh udon noodles from drying out.

Can I substitute ingredients in Stir-Fried Udon Noodles with Spicy Sesame-Ginger Sauce and Baby Bok Choy?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Stir-Fried Udon Noodles with Spicy Sesame-Ginger Sauce and Baby Bok Choy for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Stir-Fried Udon Noodles with Spicy Sesame-Ginger Sauce and Baby Bok Choy vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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