Sizzling Chinese Pepper Steak with Onions

Ingredients :

• 1 lb flank steak, thinly sliced against the grain
• 2 tablespoons soy sauce
• 1 tablespoon cornstarch
• 1 tablespoon vegetable oil

• 2 tablespoons vegetable oil
• 1 large onion, thinly sliced
• 1 bell pepper, thinly sliced (any color)
• 1 green bell pepper, thinly sliced
• 3 cloves garlic, minced
• 1 tablespoon ginger, minced
• 1/2 cup beef broth
• 2 tablespoons soy sauce
• 1 tablespoon oyster sauce
• 1 tablespoon hoisin sauce
• 1 tablespoon rice vinegar
• 1 teaspoon sugar
• 1 tablespoon cornstarch mixed with 2 tablespoons water (cornstarch slurry)
• 1/4 teaspoon black pepper
• 1/4 teaspoon red pepper flakes (optional, for extra heat)
• Cooked white rice or steamed rice, for serving

Instructions :

1. In a medium bowl, combine the soy sauce, cornstarch, and vegetable oil.
2. Add the thinly sliced flank steak and toss to coat.
3. Let marinate for at least 15 minutes.
4. In a small bowl, whisk together the bee