Prep Time: 15 minutes
Cook Time: 12 minutes
Total Time: 27 minutes
Servings: 4
Ingredients
For the Beef
- 1½ lbs (680 g) flank steak or sirloin, thinly sliced against the grain
- 1 tbsp cornstarch
- ½ tsp black pepper
- ¼ tsp salt
- 1 tbsp vegetable oil
Vegetables
- 1 large red bell pepper, sliced
- 1 large green bell pepper, sliced
- 1 large yellow bell pepper, sliced
- 1 small onion, sliced
- 4 cloves garlic, minced
- 1 tsp fresh ginger, grated
Savory Garlic Sauce
- ⅓ cup low-sodium soy sauce
- ¼ cup beef broth
- 2 tbsp oyster sauce
- 1 tbsp hoisin sauce
- 1 tbsp brown sugar
- 1 tbsp rice vinegar
- 1 tsp sesame oil
- 1 tsp chili garlic sauce (optional)
- 1 tbsp cornstarch
- 2 tbsp water
Garnish
- 1 tsp sesame seeds
- 2 green onions, sliced
To Serve
- Steamed jasmine rice
- Brown rice
- Fried rice
- Cauliflower rice for a low-carb option
Instructions
Step 1: Prepare the Beef
Pat the beef dry with paper towels. Toss it with the cornstarch, salt, and black pepper until evenly coated. Let it rest for 10 minutes.
Step 2: Make the Sauce
In a bowl, whisk together:
- Soy sauce
- Beef broth
- Oyster sauce
- Hoisin sauce
- Brown sugar
- Rice vinegar
- Sesame oil
- Chili garlic sauce
In a separate small bowl, mix the cornstarch with the water to make a slurry.
Step 3: Cook the Beef
Heat a large cast-iron skillet or wok over high heat.
Add the vegetable oil.
Cook the beef in batches for 2–3 minutes per batch until browned. Do not overcrowd the pan.
Transfer the cooked beef to a plate.
Step 4: Cook the Vegetables
In the same skillet add:
- Onion
- Red bell pepper
- Green bell pepper
- Yellow bell pepper
Stir-fry for 3–4 minutes until crisp-tender.
Add the garlic and ginger and cook for 30 seconds until fragrant.
Step 5: Finish the Dish
Return the beef to the skillet.
Pour in the sauce and stir well.
Add the cornstarch slurry.
Cook for 2–3 minutes, stirring constantly, until the sauce thickens and coats the beef and peppers with a glossy finish.
Step 6: Serve
Serve immediately over hot steamed rice.
Garnish with:
- Sesame seeds
- Sliced green onions
Nutrition (Approximate Per Serving)
- Calories: 430
- Protein: 35 g
- Carbohydrates: 15 g
- Fiber: 3 g
- Sugar: 8 g
- Fat: 24 g
- Saturated Fat: 8 g
- Sodium: 850 mg
Chef’s Tips
- Slice the beef while it’s slightly frozen for thin, even strips.
- Cook the beef in batches to achieve a better sear.
- Keep the bell peppers slightly crisp for the best texture.
- For extra heat, add sliced fresh red chilies or increase the chili garlic sauce.
- Marinate the beef for 20–30 minutes in 1 tablespoon soy sauce, 1 teaspoon sesame oil, and 1 teaspoon cornstarch for an even more tender and flavorful result.
- Leftovers can be refrigerated in an airtight container for up to 3 days and reheated in a hot skillet.

