Beef and Pepper Stir-fry
Tender strips of beef and crisp, colorful bell peppers tossed in a savory, slightly peppery sauce. This quick stir-fry comes together faster than takeout and makes a perfect weeknight dinner served over steamed rice.
For 4 servings
- prep · ~10 min
Marinate the beef.
1.In a bowl, combine sliced flank steak with 1 tablespoon soy sauce, cornstarch, sesame oil, and black pepper.2.Mix well and let sit at room temperature for 10 minutes while prepping vegetables.TIPSlice flank steak against the grain — this shortens the muscle fibers and keeps every bite tender. - prep · ~1 min
Make the stir-fry sauce.
1.In a small bowl, whisk together the remaining 2 tablespoons soy sauce, oyster sauce, and water.2.Set the sauce near the stove. - fry · ~3 min
Sear the beef.
1.Heat vegetable oil in a wok over high heat until shimmering.2.Add marinated beef in a single layer and sear for 1 minute without moving.3.Stir-fry for another 1-2 minutes until just browned. Transfer to a plate and set aside.TIPDon't crowd the pan — if your wok is small, cook the beef in two batches so it sears instead of steaming. - fry · ~3 min
Stir-fry the vegetables.
1.In the same wok, add garlic and ginger, stir-frying for 15 seconds until fragrant.2.Add sliced onion and bell peppers, stir-frying for 2-3 minutes until just tender but still crisp. - fry · ~1 min
Combine and finish the dish.
1.Return the beef to the wok and pour in the prepared sauce.2.Toss everything together over high heat for 1 minute until the sauce coats the beef and peppers.3.Taste and add a pinch of salt if needed. - garnish
Garnish with sliced green onions and serve immediately over steamed rice.
What to keep in mind.
6 tips from the recipe — small details that make a real difference to the final dish.
- 1Slice flank steak against the grain for maximum tenderness.
- 2Pat bell peppers dry after washing to prevent excess moisture in the wok.
- 3Do not overcrowd the wok when searing beef; cook in batches if needed.
- 4Have all ingredients prepped and within reach before you start stir-frying.
- 5Let the wok get smoking hot before adding oil to achieve a proper sear.
- 6Taste the finished dish before salting — soy and oyster sauce are already salty.
Adapt it for your goals.
Low-carb
Serve over cauliflower rice or zucchini noodles instead of white rice to reduce carbs while keeping the stir-fry flavors intact.
chicken versionChicken version
Substitute boneless chicken thighs or breast for flank steak; adjust cooking time until chicken is cooked through and no longer pink.
spicySpicy
Add 1-2 dried red chilies or a teaspoon of chili garlic sauce during the vegetable stir-fry for heat.
vegetarianVegetarian
Replace beef with extra-firm tofu or seitan and use mushroom-based oyster sauce to keep it plant-based.
Why this is on our healthy list.
Rich in Protein
Flank steak provides high-quality protein essential for muscle repair and satiety.
Good Source of Vitamin C
Bell peppers, especially the red variety, are loaded with vitamin C to support immune function.
Low in Added Sugar
This stir-fry relies on savory sauces rather than added sugars, making it a lighter weeknight option.
Frequently asked questions
Yes, sirloin or ribeye work well; just slice thinly against the grain and adjust cooking time if the cut is thicker.



