Easy Beef Chop Suey: My Grandmother's Flavorful Stir

Ingredients

• 1 lb (450 g) flank steak, thinly sliced against the grain
• 2 tablespoons (30 mL) soy sauce
• 1 tablespoon (15 mL) cornstarch
• 1 tablespoon (15 mL) vegetable oil (for marinating)
• 1 cup (150 g) bell peppers, sliced (mix of red and green)
• 1 cup (150 g) broccoli florets
• 1 cup (150 g) snap peas or snow peas
• 1 medium onion, sliced
• 2 cloves garlic, minced
• 1 tablespoon (15 mL) fresh ginger, minced
• 3 tablespoons (45 mL) soy sauce
• 1 tablespoon (15 mL) oyster sauce (optional)
• 1 teaspoon (5 mL) sesame oil
• 1 tablespoon (15 mL) rice vinegar
• ½ cup (120 mL) beef broth or water
• Salt and pepper, to taste
• Cooked jasmine or brown rice, for serving