This beef and onion stir-fry is a quick and flavorful dish that combines tender beef slices with caramelized onions in a rich, savory sauce. Perfect for busy weeknights, it pairs beautifully with steamed rice or noodles for a hearty meal.
Why This Recipe Works
✔ Quick & Easy – Ready in just 30 minutes!
✔ Tender & Juicy Beef – Marinated beef stays flavorful and soft.
✔ Savory Sauce – A perfect balance of sweet, salty, and umami flavors.
✔ Great for Meal Prep – Stores well for leftovers!
What You’ll Need for This Recipe
For the Beef:
1 lb (450g) beef sirloin or flank steak, thinly sliced
1 tablespoon soy sauce
1 teaspoon cornstarch
1 teaspoon vegetable oil
½ teaspoon black pepper
For the Sauce:
3 tablespoons soy sauce
1 tablespoon oyster sauce
1 tablespoon brown sugar or honey
1 teaspoon sesame oil
½ teaspoon ground black pepper
¼ cup water or beef broth
For the Stir-Fry:
1 large onion, sliced
2 cloves garlic, minced
1 tablespoon vegetable oil
1 teaspoon fresh ginger, grated (optional)
1 green onion, chopped (for garnish)
Sesame seeds (optional, for garnish)
How to Make Stir-Fried Beef with Onion
Step 1: Prepare the Beef
In a bowl, mix the sliced beef with soy sauce, cornstarch, vegetable oil, and black pepper. Let it marinate for 10-15 minutes while you prepare the sauce and other ingredients.
Step 2: Make the Sauce
In a small bowl, whisk together soy sauce, oyster sauce, brown sugar, sesame oil, black pepper, and water (or beef broth). Set aside.
Step 3: Stir-Fry the Beef
Heat 1 tablespoon of oil in a large pan or wok over high heat.
Add the marinated beef and stir-fry for 2-3 minutes until browned. Remove from the pan and set aside.
Step 4: Stir-Fry the Onion & Combine Everything
In the same pan, add a little more oil if needed. Sauté the onions and garlic until they are soft and slightly caramelized (about 2-3 minutes).
Return the beef to the pan and pour in the prepared sauce. Stir everything together and cook for another 2-3 minutes until the beef is tender and the sauce has thickened slightly.
Step 5: Serve & Enjoy!
Garnish with chopped green onions and sesame seeds if desired.
Serve hot with steamed rice or noodles.
Tips + Tricks for Recipe Success
✔ Slice Beef Thinly – Cutting the beef against the grain ensures tenderness.
✔ Don’t Overcook – Cook beef quickly over high heat to keep it juicy.
✔ Add Vegetables – Try adding bell peppers, mushrooms, or broccoli for extra nutrition.
✔ Make It Spicy – Add a pinch of red pepper flakes or sriracha for heat.
Serving Suggestions
Serve with steamed jasmine rice for a classic meal.
Pair with garlic noodles or stir-fried veggies.
Add a side of kimchi or pickled cucumbers for extra flavor.
Storage & Reheating
Refrigerate leftovers in an airtight container for up to 3 days.
Reheat in a pan over medium heat with a splash of water to refresh the sauce.
Freeze for up to 2 months, then thaw overnight in the fridge before reheating.
Why You’ll Love This Recipe
This beef and onion stir-fry is quick, flavorful, and satisfying. Whether you’re making it for dinner, meal prep, or a special occasion, it’s a guaranteed crowd-pleaser!
Try it today and enjoy a restaurant-quality dish at home! ❤️