Spicy gochujang udon noodles are a quick, fiery Korean-inspired stir-fry featuring thick, chewy udon noodles coated in a glossy, sweet-spicy sauce made with gochujang (Korean chili paste), soy sauce, and garlic. This dish comes together in about 20 minutes, making it a perfect weeknight dinner that delivers big flavor with minimal effort. The combination of gochujang’s fermented depth, a touch of honey, and the satisfying chew of udon creates a bowl that’s both comforting and exciting.
Ingredients
- 2 servings (about 7 oz / 200 g) fresh or frozen udon noodles (or 5.5 oz / 155 g dried udon)
- 2 tbsp (30 g) gochujang (Korean chili paste)
- 2 tbsp (30 ml) soy sauce
- 1 tbsp (15 ml) honey or sugar
- 1 tbsp (15 ml) rice vinegar (or apple cider vinegar)
- 1 tsp (5 ml) toasted sesame oil
- 2 cloves garlic, minced
- 1 tsp (5 g) grated fresh ginger
- 2 tbsp (30 ml) vegetable or neutral oil
- 1 small onion, thinly sliced (about 1 cup / 100 g)
- 1 small carrot, julienned (about ½ cup / 60 g)
- 2 green onions, sliced (white and green parts separated)
- 1 tbsp (10 g) toasted sesame seeds, for garnish
- Optional: 1 soft-boiled egg, for serving
Instructions
- Bring a large pot of water to a boil. If using fresh or frozen udon, cook according to package directions (usually 1–2 minutes for fresh, 2–3 for frozen). If using dried udon, cook for 6–8 minutes until tender but still chewy. Drain and rinse briefly with cold water to stop cooking; set aside.
- In a small bowl, whisk together gochujang, soy sauce, honey, rice vinegar, sesame oil, garlic, and ginger. Set the sauce aside.
- Heat a large skillet or wok over medium-high heat. Add the vegetable oil. Once shimmering, add the onion and carrot. Stir-fry for 2–3 minutes until the vegetables begin to soften but still have a slight crunch.
- Add the cooked udon noodles to the skillet. Pour the sauce over the noodles and toss everything together, using tongs or chopsticks, until the noodles are evenly coated and heated through, about 2–3 minutes.
- Stir in the white parts of the green onions. Cook for another minute.
- Remove from heat. Divide between two bowls. Garnish with the green parts of the green onions and toasted sesame seeds. Add a soft-boiled egg if desired. Serve hot.
Tips
- Gochujang substitutes: If you don’t have gochujang, mix 1 tbsp (15 g) miso paste with 1 tsp (5 ml) sriracha or chili garlic sauce. This will change the flavor slightly (less fermented, more garlicky) but still give a delicious spicy-savory kick.
- Adjusting spice: Gochujang’s heat level varies by brand. Start with 1½ tbsp (22 g) if you’re sensitive to spice, taste, and add more after mixing the sauce.
- Don’t overcook udon: Udon noodles are meant to be chewy. Overcooking makes them mushy. Cook just until they are tender but still springy, and rinse with cold water to stop the cooking process.
- Make it a meal: Add protein like sliced beef, chicken, or tofu. If adding raw meat, cook it first in the skillet until it reaches a safe internal temperature (beef, pork, veal, lamb: 145°F / 63°C with a 3-minute rest; ground meat: 160°F / 71°C; chicken: 165°F / 74°C), then remove and set aside, and add back at the end.
Serving Suggestions
Serve the udon noodles as a standalone meal, or pair with a simple cucumber salad (thinly sliced cucumber with rice vinegar and sesame oil) for a refreshing contrast. A side of kimchi adds extra tang and spice. For a heartier dinner, serve alongside grilled beef bulgogi or crispy tofu.
Variations
- Vegetable-loaded: Add sliced bell peppers, mushrooms, or baby spinach in step 3. Cook heartier vegetables (like peppers and mushrooms) with the onion, and add leafy greens like spinach at the end.
- Peanut gochujang: Stir 1 tbsp (15 g) peanut butter into the sauce for a nutty, creamy version. This pairs well with chicken or tofu.
- Seafood twist: Add cooked shrimp or squid in the last minute of cooking. Seafood should be cooked to 145°F (63°C) for safety.
- Cheesy bake: Transfer the finished noodles to an oven-safe dish, top with shredded mozzarella or cheddar, and broil for 2–3 minutes until bubbly and golden. This is a popular Korean fusion style.
Storage and Reheating
Refrigerate leftovers in an airtight container for up to 3 days. The noodles will absorb some sauce and may become softer. To reheat, add a splash of water or soy sauce and stir-fry in a hot skillet for 2–3 minutes, or microwave in 30-second bursts, stirring in between, until heated through (165°F / 74°C). The texture won’t be as chewy as fresh, but it’s still delicious. Freezing is not recommended as udon becomes mushy when thawed.
Frequently Asked Questions
Can I use other noodles? Yes, you can substitute lo mein, soba, or even spaghetti. Cooking times will vary; cook according to package directions until al dente. Soba will give a nuttier flavor, while spaghetti is a neutral substitute.
Is gochujang very spicy? Gochujang has a moderate heat level, but it varies by brand and type. It’s also sweet and savory. If you’re sensitive to spice, start with less and add more to taste. You can also add a pinch of sugar to balance the heat.
Can I make this vegan? Yes, ensure your gochujang is vegan (most are, but some contain fish sauce or anchovy extract). Use maple syrup or agave instead of honey, and skip the egg garnish. The dish is naturally dairy-free.
Why are my noodles sticking together? After cooking, rinse the noodles with cold water and toss them with a few drops of sesame oil to prevent sticking. Also, make sure the skillet is hot enough and the sauce is added quickly so the noodles don’t sit dry.
Can I add meat? Absolutely. Thinly sliced beef, pork, or chicken work well. Cook the meat first in the skillet until it reaches the safe minimum internal temperature (beef, pork, veal, lamb: 145°F / 63°C with a 3-minute rest; ground meat: 160°F / 71°C; chicken: 165°F / 74°C), then remove and set aside. Add it back when you add the noodles.
What if I don’t have rice vinegar? You can substitute with apple cider vinegar or white wine vinegar. If you only have lemon juice, use 1 tbsp (15 ml) and reduce the amount slightly to avoid too much tang.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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