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Spicy beef pepper stir fry in cast iron skillet

Spicy Pepper Steak Stir Fry Recipe

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This restaurant-style Chinese pepper steak uses a simple velveting marinade with baking soda to create incredibly tender beef in 30 minutes. Colorful bell peppers, onions, and a savory oyster sauce make this 1980s takeout classic better than delivery.

  • Total Time: 50 minutes
  • Yield: 4 Servings 1x

Ingredients

Units Scale
For the Beef Marinade:
  • 1/2 to 1 pound thin-sliced beef (flank steak, sirloin, or round steak)
  • 1 tablespoon soy sauce
  • 1 tablespoon Shaoxing wine, cooking sherry, or rice vinegar
  • 1/4 teaspoon baking soda
  • 1 teaspoon cornstarch
For the Cooking Sauce:
  • 1 tablespoon oyster sauce
  • 1 tablespoon soy sauce
  • 1/4 cup beef stock
  • 1 teaspoon cornstarch
  • 1 teaspoon brown sugar
  • 1 teaspoon sesame oil or chili sesame oil
For the Stir Fry:
  • 1 green bell pepper, cut into strips
  • 1 red bell pepper, cut into strips
  • 1 small onion, thinly sliced
  • 2-3 hot peppers of your choice (optional)
  • 1-2 teaspoons minced garlic
  • Optional: chili pepper flakes for extra heat
  • 2-3 tablespoons sesame oil

Instructions

  1. Marinate the beef: In a gallon-sized zip-top bag, combine the sliced beef with 1 tablespoon soy sauce, 1 tablespoon Shaoxing wine, ¼ teaspoon baking soda, and 1 teaspoon cornstarch. Mix well to coat all the beef. Refrigerate for at least 30 minutes, or up to 2 hours for maximum tenderness.
  2. Prepare the cooking sauce: In a small bowl, whisk together the oyster sauce, soy sauce, beef stock, cornstarch, brown sugar, and sesame oil. Set aside.
  3. Prep the vegetables: Cut the bell peppers into strips or chunks about 1 inch in size. Slice the onion thinly. If using hot peppers, slice them. Mince the garlic.
  4. Cook the beef: Heat 1-2 tablespoons of oil in a large wok or skillet over medium-high to high heat. When the oil shimmers, add the marinated beef in a single layer (work in batches if needed to avoid crowding). Stir-fry for 3-4 minutes until the beef is browned but still slightly pink in the center.
  5. Transfer beef to a plate and set aside.
  6. Stir-fry the aromatics and vegetables: Add another tablespoon of oil to the same pan. Reduce heat to medium-high and add the minced garlic. Sauté for 30 seconds until fragrant. Add all the peppers and onions. Stir-fry for 3-4 minutes until the vegetables are tender-crisp and slightly charred but not mushy.
  7. Combine and sauce: Return the beef to the pan with the vegetables. Give the cooking sauce a quick stir and pour it over everything. Toss to coat and cook for 2-3 minutes, stirring constantly, until the sauce thickens and becomes glossy. For extra heat, add chili pepper flakes during this step.
  8. Serve: Remove from heat and serve immediately over Perfect Sticky Rice or fried rice.
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