Bulgogi Beef Udon Stir Fry Recipe

Bulgogi Beef Udon Stir Fry Recipe hits every craving: sweet-savory beef, bouncy noodles, and crisp veggies in one sizzling pan. I make this on nights when I want speed without sacrificing flavor. The bulgogi marinade does the heavy lifting while the udon noodles soak up every drop. You get a restaurant-style stir-fry that feels cozy, bold, and weeknight-easy.

Homemade Bulgogi Beef Udon Stir Fry Recipe

I love how this recipe delivers big Korean bulgogi flavor with minimal fuss. Thin-sliced beef caramelizes fast, and udon noodles bring a satisfying chew that soaks up the sauce. You cook everything in one pan, so cleanup stays simple. The leftovers taste even better, which makes your future self very happy.

I keep the ingredients flexible, so you can use whatever vegetables you have. The marinade uses pantry staples like soy sauce, brown sugar, garlic, and sesame oil. I add a touch of gochujang for heat, but you control the spice level. If you enjoy fast, high-impact dinners, you’ll keep this one in rotation.

Mistakes to Avoid

• Skip the crowding. Sear the beef in batches so the slices caramelize instead of steam.
• Don’t over-marinate. Aim for 15–30 minutes on tender cuts or up to 2 hours; long soaks can make the texture mushy.
• Avoid soggy noodles. Loosen the udon gently, drain well, and pat dry so the sauce clings.
• Don’t toss raw-beef marinade into the pan. Reserve a clean portion of the sauce before you marinate the beef.
• Keep the heat high. High heat gives you that glossy, lacquered finish and quick tenderness.

Ingredients You’ll Need

I build a two-part sauce so you can marinate the beef and still have clean sauce for the stir-fry. I scale this for 3–4 servings.

Bulgogi marinade and sauce base

• 1/4 cup low-sodium soy sauce
• 2 tablespoons brown sugar
• 1 tablespoon mirin (optional, for depth)
• 1 tablespoon toasted sesame oil
• 1 teaspoon gochujang (use 2 teaspoons for more heat)
• 4 cloves garlic, minced
• 1 teaspoon fresh ginger, grated
• 1/2 small Asian pear or sweet apple, grated (about 1/3 cup)
• 1/2 teaspoon black pepper
• 1 teaspoon cornstarch (stir into the reserved sauce later)

Stir-fry

• 1 pound beef ribeye, flap, or sirloin, very thinly sliced across the grain
• 2 bricks udon noodles (about 14–18 ounces total), fresh or frozen
• 1 tablespoon neutral oil, plus 1 teaspoon more if needed
• 1 small yellow onion, thinly sliced
• 8 ounces mushrooms, sliced (shiitake, cremini, or oyster)
• 1 red bell pepper, thinly sliced
• 2 baby bok choy, sliced (separate stems and greens)
• 3–4 scallions, sliced (reserve some for garnish)

Finishing and garnish

• 1 teaspoon toasted sesame oil
• Sesame seeds
• Extra gochujang or chili oil (optional)
• Kimchi and lime wedges (optional, for serving)

Quick stats

• Prep time: 20 minutes
• Marinate time: 15–30 minutes
• Cook time: 10 minutes
• Serves: 3–4

How to Make Bulgogi Beef Udon Stir Fry

1. Slice the beef: Partially freeze the beef for 20–30 minutes so it firms up. Slice thin across the grain. Pat dry so the beef sears, not steams.
2. Make the sauce and marinate: Whisk soy sauce, brown sugar, mirin, sesame oil, gochujang, garlic, ginger, pear, and black pepper. Scoop out 3 tablespoons of this sauce into a small bowl and stir in the cornstarch; set it aside. Toss the beef with the remaining sauce and marinate for 15–30 minutes.
3. Prep noodles and veggies: Run fresh or frozen udon under warm water to loosen, then drain and pat dry. Slice all veggies and keep the bok choy stems separate from the greens for better texture. Keep the scallion tops for garnish.
4. Sear the beef: Heat a large skillet or wok over high heat. Add 1 tablespoon oil, then add half the beef in a single layer. Sear for 60–90 seconds, flip, and cook just until browned; remove and repeat with the remaining beef.
5. Stir-fry the veggies: Add a teaspoon of oil if the pan looks dry. Add onion, mushrooms, bell pepper, and bok choy stems. Stir-fry for 2–3 minutes until crisp-tender.
6. Add noodles and sauce: Add udon and the reserved cornstarch-thickened sauce. Toss until the noodles loosen and the sauce turns glossy and coats everything, about 1–2 minutes.
7. Finish the stir-fry: Return the beef with any juices. Add bok choy greens and most of the scallions. Toss for 30–60 seconds, then finish with 1 teaspoon sesame oil.
8. Garnish and serve: Sprinkle sesame seeds and the remaining scallions. Add a small dollop of gochujang or a drizzle of chili oil if you want more heat. Plate it up and try not to eat straight from the pan.

Expert Tips

• Freeze to slice: I pop the steak in the freezer for 20 minutes so I can slice paper-thin strips with zero stress.
• Reserve the sauce first: I always pull the stir-fry sauce portion before I add the beef to keep things safe and saucy.
• Use extreme heat: I crank the burner and let the wok heat until it almost smokes. High heat gives you that bulgogi caramelization.
• Loosen udon gently: I rinse and drain well so the noodles separate. Dry noodles take sauce like a champ.
• Batch the beef: I cook the beef in two quick rounds to keep the sear strong and the texture tender.

Substitutions & Variations

Noodle options: Use fresh udon, frozen udon bricks, or thick rice noodles. Soba or ramen also work in a pinch.

Veggie mix: Use mushrooms, onions, bell peppers, bok choy, carrots, or snap peas. Clean out the crisper drawer and win dinner.

Heat levels: Add more gochujang or a pinch of red pepper flakes. For mild heat, use gochujang sparingly or swap with a touch of sriracha.

Sweetness: Use grated Asian pear for classic bulgogi sweetness. A sweet apple or pear juice also works well.

Make-Ahead and Storage Tips

This Bulgogi Beef Udon Stir Fry reheats so well that I often pack it for easy lunches.

Make-Ahead: Slice and marinate the beef up to 8 hours in advance, and prep all veggies and sauce in separate containers. Loosen and drain the udon, toss with a teaspoon of oil, and refrigerate for up to 2 days so it doesn’t clump.

To Refrigerate: Store cooled stir-fry in an airtight container in the fridge for up to 4 days.

Freezing: Freeze portions in freezer-safe containers for up to 2 months. Thaw in the fridge overnight for best texture.

To Reheat: Reheat in a hot skillet with a splash of water or broth, or warm in the microwave in 30-second bursts. Air fry at 350°F for 3–5 minutes to revive edges and add a little char.

Adaly Kandice

Bulgogi Beef Udon Stir Fry Recipe

A delicious Korean-inspired stir fry combining tender bulgogi beef and chewy udon noodles in a savory sauce.

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Prep Time 15 minutes mins

Cook Time 15 minutes mins

Total Time 30 minutes mins

Servings: 4

Course: Lunch

Cuisine: American

Ingredients

  

• 1 pound thinly sliced bulgogi beef
• 14 oz udon noodles
• 1 cup sliced onions
• 1 cup sliced bell peppers
• 2 tablespoons soy sauce
• 1 tablespoon sesame oil
• 2 cloves garlic, minced
• 1 teaspoon grated ginger
• 1 tablespoon vegetable oil
• 1 teaspoon sugar
• 1 tablespoon green onions, chopped
• 1 teaspoon toasted sesame seeds

Instructions

 

1. Cook udon noodles according to package instructions, drain and set aside.
2. Heat vegetable oil in a large pan over medium-high heat.
3. Add garlic and ginger, sauté for 1 minute until fragrant.
4. Add bulgogi beef to the pan and cook until browned and cooked through.
5. Add onions and bell peppers, stir-fry for 3-4 minutes until vegetables are tender.
6. Stir in soy sauce, sugar, and sesame oil; mix well.
7. Add cooked udon noodles to the pan and toss to combine and heat through.
8. Remove from heat and garnish with chopped green onions and toasted sesame seeds if desired.
9. Serve immediately and enjoy your Bulgogi Beef Udon Stir Fry.

Notes

For best flavor, use fresh ingredients and do not overcook the beef to maintain tenderness. Udon noodles can be substituted with other thick noodles but udon is preferred for texture.