Irresistible Pepper Steak with Bell Peppers & Onion: A Flavor-Packed Weeknight Delight

If you’re craving a satisfying, savory stir-fry that’s both quick and full of bold flavors, look no further than this Pepper Steak with Bell Peppers & Onion. Tender slices of flank steak mingle with crisp, colorful bell peppers and sweet onions, all coated in a rich, umami-packed sauce. This dish is the perfect harmony of savory, slightly sweet, and aromatic notes, making it a guaranteed crowd-pleaser for family dinners or weeknight meals.

Whether you’re a seasoned cook or just starting in the kitchen, this recipe is simple enough for beginners but impressive enough to wow anyone at the table. Let’s dive into the ingredients, techniques, and tips that make this stir-fry exceptional.

Ingredients and Their Roles

1 lb flank steak, thinly sliced against the grain – Flank steak is lean, flavorful, and tender when sliced thinly. Cutting against the grain ensures every bite melts in your mouth.
1 green bell pepper & 1 red bell pepper, sliced – Bell peppers add crunch, vibrant color, and a mild sweetness that balances the savory steak.
1 large onion, sliced – Adds a natural sweetness and depth of flavor that complements both the beef and peppers.
2 tbsp vegetable oil – Essential for high-heat stir-frying, allowing the steak and vegetables to sear perfectly without sticking.
3 tbsp soy sauce – Provides salty, umami flavor that enhances the meat and vegetables.
1 tbsp oyster sauce – Adds richness and a slightly sweet, complex flavor that elevates the dish.
1 tbsp cornstarch – Coats the steak to lock in juices and later helps thicken the sauce.
1/2 cup beef broth – Adds moisture and a savory base for the sauce.
1 tsp sesame oil – Infuses the stir-fry with a nutty aroma that makes it irresistible.
2 cloves garlic, minced – Provides a punch of aromatic flavor that enhances the overall dish.
1/2 tsp freshly ground black pepper – Adds subtle heat and depth.
Steamed white rice, for serving – Perfect for soaking up the delicious sauce and completing the meal.

Step-by-Step Instructions

Marinate the Steak:
In a medium bowl, combine the steak slices with 1 tbsp soy sauce, cornstarch, and black pepper. Let it marinate for 15 minutes. This tenderizes the meat and ensures a velvety coating once cooked.
Sear the Steak:
Heat 1 tbsp vegetable oil in a large skillet or wok over medium-high heat. Add the steak slices and sear 1–2 minutes per side until browned. Remove and set aside to prevent overcooking.
Stir-Fry the Vegetables:
Add the remaining oil to the pan. Toss in the onion and bell peppers and stir-fry for 4–5 minutes until they’re tender-crisp, preserving their color and crunch.
Combine and Simmer:
Return the steak to the skillet. Add the remaining soy sauce, oyster sauce, beef broth, garlic, and sesame oil. Stir well and simmer for 2–3 minutes, allowing the sauce to thicken and coat the steak beautifully.
Serve:
Spoon the stir-fry over steamed white rice and garnish with a sprinkle of extra black pepper if desired.

Why This Recipe Is Loved

This Pepper Steak with Bell Peppers & Onion is loved because it’s quick, easy, and bursting with flavor. The tender steak, crisp vegetables, and rich sauce create a perfect balance of texture and taste. Plus, it’s versatile—perfect as a weeknight dinner or for meal prep.

Pro Tips for Perfection

Freeze the steak for 30 minutes before slicing to make it easier to cut thin, even pieces.
Add a splash of rice vinegar or Shaoxing wine with the sauces for an extra depth of flavor.
For a thicker sauce, mix 1 tsp cornstarch with 2 tbsp water and stir it in at the end.
Don’t overcrowd the pan; cook in batches if needed to ensure even searing.

Serving Suggestions

Serve over steamed jasmine or basmati rice.
Pair with stir-fried garlic broccoli or bok choy for extra greens.
Garnish with toasted sesame seeds or sliced green onions for added texture and flavor.

Conclusion

In just 30 minutes, you can create a restaurant-quality stir-fry at home with this Pepper Steak with Bell Peppers & Onion. It’s tender, savory, colorful, and loaded with umami, making it a family favorite that’s as satisfying as it is simple. Whether you’re cooking for a busy weeknight or impressing guests, this recipe delivers maximum flavor with minimal effort. Try it tonight, and you’ll understand why this dish keeps everyone coming back for seconds.