Add the soy sauce, cornstarch, sesame oil, garlic, ginger, and black pepper. Toss thoroughly until the beef is evenly coated.
Let it rest for 15–20 minutes.
2. Prepare the Sauce
In a small bowl, whisk together the soy sauce, beef broth, honey, rice vinegar, sesame oil, cornstarch, and chili flakes if using.
Set aside.
3. Sear the Beef
Heat a large skillet or wok over high heat.
Add the vegetable oil.
Cook the beef in batches rather than overcrowding the pan. Sear for about 2–3 minutes per side, until browned on the outside and cooked to your preferred doneness.
Transfer the beef to a plate.
4. Cook the Vegetables
Using the same skillet, add the onion and bell peppers.
Stir-fry for approximately 3–5 minutes, keeping them slightly crisp.
Add a little more oil if needed.
5. Combine Everything
Return the beef to the skillet.
Pour in the prepared sauce and toss everything together.
Cook for another 1–2 minutes, allowing the sauce to thicken and coat the beef and vegetables.
6. Finish
Sprinkle the stir-fry with sesame seeds and sliced green onions.
Serve immediately while hot.
What to Serve With Beef Stir-Fry
This dish pairs beautifully with:
Steamed white rice
Jasmine rice
Fried rice
Egg noodles
Rice noodles
Steamed vegetables
For a lighter meal, serve it over cauliflower rice or alongside a fresh cucumber salad.
Tips for Tender Beef
Slice against the grain. Cutting the beef against the muscle fibers makes each bite noticeably more tender.
Use high heat. A very hot skillet helps the beef develop a browned exterior without becoming overcooked.
Don’t overcrowd the pan. Cooking in batches prevents the beef from steaming.
Don’t overcook the vegetables. Keeping the peppers slightly crisp adds texture and freshness to the dish.
Easy Variations
You can customize this stir-fry with your favorite vegetables, including:
Mushrooms
Broccoli
Snow peas
Carrots
Baby corn
Zucchini
For extra heat, add fresh chili peppers or additional chili flakes.
Frequently Asked Questions
What cut of beef is best?
Sirloin, flank steak, or skirt steak work particularly well. The important thing is to slice the meat thinly against the grain.
Can I prepare this ahead of time?
The beef can be sliced and marinated several hours ahead. For the best texture, cook the stir-fry shortly before serving.
Can I use chicken instead?
Yes. Thinly sliced chicken breast or boneless chicken thighs can be substituted, but make sure the chicken reaches a safe internal temperature before serving.
Final Thoughts
This Sizzling Beef Stir-Fry with Peppers and Onions is a simple way to turn everyday ingredients into a colorful and satisfying dinner. Tender caramelized beef, sweet onions, crisp peppers, and a glossy savory sauce come together in one skillet for a meal that’s perfect served over hot rice or noodles.
